imbauba vs angiospermous tree

imbauba and angiospermous tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
imbauba	Yes	No	No	No
angiospermous tree	Yes	No	No	No

As nouns, angiospermous tree is a hypernym of imbauba; that is, angiospermous tree is a word with a broader meaning than imbauba:

Other hypernyms of imbauba include flowering tree.

imbauba (noun)	angiospermous tree (noun)
tropical American tree with large peltate leaves and hollow stems	any tree having seeds and ovules contained in the ovary