stipule vs plant part

stipule and plant part both are nouns.

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

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

stipule: a small leafy outgrowth at the base of a leaf or its stalk; usually occurring in pairs and soon shed
plant part: any part of a plant or fungus

Other hypernyms of stipule include plant structure.

stipule (noun)	plant part (noun)
a small leafy outgrowth at the base of a leaf or its stalk; usually occurring in pairs and soon shed	any part of a plant or fungus