witch elm vs wych elm

witch elm and wych elm both are nouns.

Word	Noun	Adjective	Verb	Adverb
witch elm	Yes	No	No	No
wych elm	Yes	No	No	No

As nouns, witch elm and wych elm are synonyms defined as:

Other synonyms of witch elm include Ulmus glabra.

witch elm (noun)	wych elm (noun)
Eurasian elm often planted as a shade tree	Eurasian elm often planted as a shade tree