Cotter and Keystone

Cotter noun - Fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together.

Keystone and cotter are semantically related. in solid piece topic. In some cases you can use "Keystone" instead a noun "Cotter".

Nearby Word: cottar

Keystone noun - An immaterial thing upon which something else rests.

Cotter and keystone are semantically related. You can use "Cotter" instead a noun "Keystone".