psychological science vs ambiguous

psychological science is a noun but ambiguous is not a noun.

Word	Noun	Adjective	Verb	Adverb
psychological science	Yes	No	No	No
ambiguous	No	Yes	No	No

psychological science (noun)	ambiguous (noun)
the science of mental life

psychological science (adjective)	ambiguous (adjective)
	having more than one possible meaning
	open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead
	having no intrinsic or objective meaning; not organized in conventional patterns