see eye to eye vs concord

see eye to eye is not a noun while concord is a noun.

Word	Noun	Adjective	Verb	Adverb
see eye to eye	No	No	Yes	No
concord	Yes	No	Yes	No

As verbs, concord is a hypernym of see eye to eye; that is, concord is a word with a broader meaning than see eye to eye:

Other hypernyms of see eye to eye include agree, concur, hold.

see eye to eye (noun)	concord (noun)
	agreement of opinions
	the determination of grammatical inflection on the basis of word relations
	a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole

see eye to eye (verb)	concord (verb)
be in agreement	be in accord; be in agreement
	arrange the words of a text so as to create a concordance
	arrange by concord or agreement
	go together