psilophyte vs vascular plant

psilophyte and vascular plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
psilophyte	Yes	No	No	No
vascular plant	Yes	No	No	No

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

psilophyte: any plant of the order Psilophytales: a savannah plant
vascular plant: green plant having a vascular system: ferns, gymnosperms, angiosperms

Other hypernyms of psilophyte include tracheophyte.

psilophyte (noun)	vascular plant (noun)
any plant of the order Psilophytales: a savannah plant	green plant having a vascular system: ferns, gymnosperms, angiosperms