magnoliopsid vs flowering plant

magnoliopsid and flowering plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnoliopsid	Yes	No	No	No
flowering plant	Yes	No	No	No

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

magnoliopsid: flowering plant with two cotyledons; the stem grows by deposit on its outside
flowering plant: plants having seeds in a closed ovary

Other hypernyms of magnoliopsid include angiosperm.

magnoliopsid (noun)	flowering plant (noun)
flowering plant with two cotyledons; the stem grows by deposit on its outside	plants having seeds in a closed ovary