Im wondering if anyone could tell me the name of words which give an entirety description to similar or identical objects. Like 'lemon trees' for describing all tree which grow lemons as a whole ?

 

just the english definition..

 

thanks.

Maybe a 'classification'?

 

The thing is: in many cases, there is a specific word for it:

With lemon trees, that would be a genus:

With knives, forks and spoons, the word is cutlery.

With shampoo, soap, deodorant, the word is toiletry.

Bricks, beams, screws: construction materials.

Etc, etc.

Do you mean collective noun?