balsa vs flowering tree

balsa and flowering tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
balsa	Yes	No	No	No
flowering tree	Yes	No	No	No

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

balsa: forest tree of lowland Central America having a strong very light wood; used for making floats and rafts and in crafts
flowering tree: any tree having seeds and ovules contained in the ovary

Other hypernyms of balsa include angiospermous tree.

balsa (noun)	flowering tree (noun)
forest tree of lowland Central America having a strong very light wood; used for making floats and rafts and in crafts	any tree having seeds and ovules contained in the ovary
strong lightweight wood of the balsa tree used especially for floats