Quick answer: Identical means exactly alike in every detail — two separate things that match perfectly: The twins wore identical outfits. Same can mean exactly alike (like identical) but also the one single thing referred to before: We go to the same gym. (one shared gym, not two identical gyms). Remember: use IDENTICAL when two things perfectly match; use SAME when referring to one shared thing or general similarity. For a fuller definition, see the Cambridge Dictionary entry for ‘identical’.
Comparison Table
| Word | Part of Speech | Meaning | Example |
|---|---|---|---|
| identical | adjective | exactly the same in every detail; indistinguishable | The two signatures were identical. |
| same | adjective / pronoun / adverb | not different; the very one previously mentioned; shared | We had the same teacher at school. |
Using Identical
Identical always describes two or more separate things that are exactly alike in every detail. There is no ambiguity: if something is identical, it matches perfectly. It is typically followed by to or used with twins.
The two vases are identical — I can’t tell them apart.
Her handwriting is identical to her sister’s.
They are identical twins.
The symptoms were identical in all three patients.
Using Same
Same has two key uses:
- Shared / one object: “We use the same car” means there is one car that both people use.
- Matching / alike: “They had the same idea” can mean they independently had identical ideas, or they share one idea.
We both go to the same school. (one school, shared)
They made the same mistake twice. (one repeated mistake)
I ordered the same dish as you. (matching dish)
He is still the same person he was ten years ago. (unchanged)
Same is also used as a pronoun: I’ll have the same, please.
The Critical Distinction
The most important difference is identity vs similarity:
We go to the same gym. → One gym. We both use it.
Our gyms are identical. → Two different gyms that match perfectly.
They drove the same car. → Could mean one shared car, or matching models.
Their cars are identical. → Definitely two separate cars that match exactly.
Memory Tip
IDENTICAL → think identity: two things with matching identities (but still separate).
SAME → think shared: one thing that is shared, or things that match.
Common Mistakes
✗ We go to the identical school.
✓ We go to the same school.
✗ The two fingerprints were the same. (vague)
✓ The two fingerprints were identical. (precise)
✗ We had same problem.
✓ We had the same problem. (same is usually preceded by “the”)
Also confusing: Differentiate vs Distinguish, Imaginary vs Fictional, Accept vs Except. Browse all confusing word pairs →
Quick Check: Identical or Same?
Four questions — choose the correct word for each sentence.
1. “We both live on the ___ street.”
2. “The two paintings are ___ — even experts can’t tell them apart.”
3. “She ordered ___ dessert as me.”
4. “The two DNA samples were ___.”
Frequently Asked Questions
What is the difference between identical and same?
Identical means exactly alike in every detail: two or more separate things that match perfectly, with no differences. Same can mean either exactly alike (like identical) or can refer to one shared thing: “We go to the same school” means one school that we both attend. Identical always implies two separate things; same can imply one shared thing.
Can identical and same be used interchangeably?
Sometimes, but with important distinctions. “They have the same car” is ambiguous (one shared car or two matching cars), while “their cars are identical” clearly means two separate but perfectly matching cars. When you want precision about two things matching exactly, identical is the stronger and clearer choice.
Should I use “the same” or just “same”?
In English, same is almost always preceded by the definite article “the”: “the same book,” “the same problem.” Omitting “the” before same sounds unnatural: “We had same idea” is incorrect. The exception is in certain fixed phrases like “same here” or “same again, please” where the article is understood.
What are identical twins?
Identical twins (also called monozygotic twins) develop from a single fertilised egg that splits into two. They share the same DNA and are the same sex. Fraternal twins (dizygotic) develop from two separate eggs and are genetically no more similar than ordinary siblings. In English, identical is the fixed adjective used for monozygotic twins; you would not say “same twins.”
What is the adverb form of identical?
The adverb is identically: “The two documents were identically formatted.” It means in an exactly matching way. The related noun is identity or identification, though these have broader meanings beyond simple likeness. Similarly is a synonym but implies close rather than exact similarity.
What does “the same” mean as a pronoun?
As a pronoun, the same refers to something already mentioned: “I’ll have the same, please” (the same thing as someone else). “Ditto” is an informal equivalent. In legal and formal writing, “the same” is used to avoid repetition: “the documents and any copies thereof” might be followed by “the same shall be returned.”
Is “identical to” or “identical with” correct?
Both are used, though “identical to” is more common in modern English: “Her handwriting is identical to her mother’s.” “Identical with” is more formal and traditional: “The symptoms are identical with those of influenza.” In everyday English, both are acceptable; “identical to” is the safer and more natural choice.
Can I say “identically the same”?
This is redundant. Identical already means exactly the same, so “identically the same” is tautological. Use either identical or exactly the same, but not both together. Similarly, “completely identical” is also redundant since identical already implies completeness — though it is used informally for emphasis.
How are identical and same used in academic writing?
In academic writing, identical is used when precision matters: “The two conditions produced identical results.” Same is used for shared referents: “All participants completed the same questionnaire.” Using identical correctly signals precision and attention to detail. Confusing the two rarely causes serious errors but can create ambiguity in scientific contexts.
What is the opposite of identical?
The opposite of identical is different, distinct, or dissimilar. Something is non-identical if it differs in at least one way. In mathematics and logic, two objects are identical if they are literally one and the same thing (Leibniz’s Law). In everyday English, identical simply means looking or being exactly the same in all observable respects.