stub vs plant part

stub and plant part both are nouns.

Word	Noun	Adjective	Verb	Adverb
stub	Yes	No	Yes	No
plant part	Yes	No	No	No

As nouns, plant part is a hypernym of stub; that is, plant part is a word with a broader meaning than stub:

Other hypernyms of stub include plant structure.

stub (noun)	plant part (noun)
the small unused part of something (especially the end of a cigarette that is left after smoking)	any part of a plant or fungus
a torn part of a ticket returned to the holder as a receipt
the part of a check that is retained as a record
a short piece remaining on a trunk or stem where a branch is lost
a small piece

stub (verb)	plant part (verb)
strike (one's toe) accidentally against an object
clear of weeds by uprooting them
extinguish by crushing
pull up (weeds) by their roots