Courgette and Summer squash

Courgette noun - Small cucumber-shaped vegetable marrow; typically dark green.

Summer squash and courgette are semantically related. In some cases you can use "Summer squash" instead a noun "Courgette".

Summer squash noun - Any of various usually bushy plants producing fruit that is eaten while immature and before the rind or seeds harden.

Courgette and summer squash are semantically related. Sometimes you can replace term "Courgette" with "Summer squash", this terms are similar.