concrete poem vs verse form

concrete poem and verse form both are nouns.

Word	Noun	Adjective	Verb	Adverb
concrete poem	Yes	No	No	No
verse form	Yes	No	No	No

As nouns, verse form is a hypernym of concrete poem; that is, verse form is a word with a broader meaning than concrete poem:

concrete poem: a poem whose meaning is conveyed through its graphic shape or pattern on the printed page.
verse form: a composition written in metrical feet forming rhythmical lines

Other hypernyms of concrete poem include poem.

concrete poem (noun)	verse form (noun)
a poem whose meaning is conveyed through its graphic shape or pattern on the printed page.	a composition written in metrical feet forming rhythmical lines