Carpentry & Woodworking Vocabulary

A mortise and tenon is one of the oldest and strongest joints in carpentry. The mortise is a rectangular hole or slot cut into one piece of wood, and the tenon is a matching tongue shaped at the end of another piece. The tenon slides into the mortise like a key into a lock, and the two are usually fixed with glue or a small wooden peg. This joint is used in tables, chairs, doors, and timber frames because it resists pulling and twisting far better than nails or screws alone.

A dovetail is a decorative and very strong interlocking joint, most often seen on the corners of drawers and boxes. It is made up of wedge-shaped "pins" and "tails" that fit tightly together, rather like fingers interlocking. The angled shape means the joint cannot be pulled apart in one direction, so it stays solid even under repeated use. Because cutting dovetails by hand requires skill and precision, the presence of neat dovetail joints is often a sign of high-quality, handmade furniture.

Both a nail and a screw are metal fasteners used to join pieces of wood, but they work differently. A nail is a smooth spike that you hammer straight into the wood; it is quick to use and good for holding parts together when force is spread out. A screw has a spiral thread and is turned in with a screwdriver or drill; the thread grips the wood and gives a much stronger, more reliable hold that can also be unscrewed later. As a rule, carpenters use screws where strength and a removable fixing matter, and nails where speed is more important.

A lathe is a machine that holds a piece of wood and spins it rapidly while the carpenter holds a cutting tool against it. As the wood turns, the tool shapes it into smooth, round forms. This process is called "turning". A lathe is how round objects such as chair legs, table legs, bowls, and banister spindles are made. Because the wood does the spinning and the tool stays relatively still, a lathe can produce perfectly symmetrical curved shapes that would be very difficult to cut by hand.

A plane is a tool that shaves off thin, even slivers of wood with a sharp blade, making a surface flatter and removing larger bumps or rough saw marks. Sanding means rubbing the wood with sandpaper to make it smooth, and it removes only very fine amounts of material. In practice, carpenters often use a plane first to get a surface flat and level, then sand it afterwards to make it perfectly smooth and ready for varnish or paint. Planing shapes; sanding finishes.

The grain is the direction and pattern of the fibres that run through a piece of wood. Wood is naturally stronger along the grain than across it, and it behaves differently depending on which way you cut or smooth it. Carpenters talk about working "with the grain" — moving a plane or sandpaper in the same direction as the fibres — to get a clean, smooth result. Going "against the grain" can tear the surface and leave it rough. The grain also gives each piece of wood its attractive, natural pattern.

A bevel and a groove are both shapes cut into wood, but they are quite different. A bevel is a sloping edge — instead of a square ninety-degree corner, the edge is cut at an angle, which is useful for making two boards meet neatly or for a softer, decorative edge. A groove is a long, narrow channel cut into the surface or edge of a piece of wood, usually to hold another part, such as a shelf or a back panel. In short, a bevel is an angled edge, while a groove is a recessed channel.

Plywood is a strong, flat board made by gluing several thin layers of wood — called veneers — on top of one another. Each layer is laid with its grain at right angles to the next, which makes the finished board very stable and resistant to splitting or warping. Plywood is cheaper and more uniform than a single solid plank, and it comes in large sheets, so it is widely used for cabinet backs, drawer bottoms, shelving, and flooring. It is one of the most common materials a modern carpenter works with.

Varnish is a clear, hard protective coating that carpenters brush or wipe onto finished wood. It soaks into and seals the surface, protecting the wood from moisture, dirt, and everyday wear, and it usually gives a smooth, glossy or satin shine. Because varnish is transparent, it lets the natural grain and colour of the wood show through, unlike paint, which covers it. Most pieces are sanded smooth first, then given two or more thin coats of varnish, with light sanding in between for a flawless finish.

The most effective approach is to connect each word to a real object or action. Watch short woodworking or DIY videos in English and notice how the words are used — you will remember chisel and clamp much better when you see them in action. Try labelling tools in a hardware shop or catalogue, and group words by type: tools (saw, drill, plane), fixings (nail, screw, hinge), and joints (mortise, tenon, dovetail). Then use the Flash Cards and Quiz on LexFizz to drill the 20 words on this page until they feel natural.