dicotyledon vs flowering plant

dicotyledon and flowering plant both are nouns.

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

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

dicotyledon: 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 dicotyledon include angiosperm.

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