orange yellow vs ochre

orange yellow and ochre both are nouns.

Word	Noun	Adjective	Verb	Adverb
orange yellow	Yes	No	No	No
ochre	Yes	Yes	No	No

As nouns, ochre is a hyponym of orange yellow; that is, ochre is a word with a more specific, narrower meaning than orange yellow:

Other hyponyms of orange yellow include ocher.

orange yellow (noun)	ochre (noun)
a shade of yellow tinged with orange	a moderate yellow-orange to orange color
	any of various earths containing silica and alumina and ferric oxide; used as a pigment

orange yellow (adjective)	ochre (adjective)
	of a moderate orange-yellow color