palo santo vs flowering tree

palo santo and flowering tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
palo santo	Yes	No	No	No
flowering tree	Yes	No	No	No

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

palo santo: South American tree of dry interior regions of Argentina and Paraguay having resinous heartwood used for incense
flowering tree: any tree having seeds and ovules contained in the ovary

Other hypernyms of palo santo include angiospermous tree.

palo santo (noun)	flowering tree (noun)
South American tree of dry interior regions of Argentina and Paraguay having resinous heartwood used for incense	any tree having seeds and ovules contained in the ovary