Beech or birch (4)

I believe the answer is:

tree

I believe this clue is a double definition.

'beech' is the first definition.
(thesaurus)

'birch' is the second definition.
(I've seen this before)

(Other definitions for tree that I've seen before include "Chestnut or elm?" , "Plant with trunk (which families have)" , "Plane or pine, for example?" , "Stand for mugs" , "Be up a .... to be in difficulties" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.