opportunism vs self-seeking

opportunism and self-seeking both are nouns.

Word	Noun	Adjective	Verb	Adverb
opportunism	Yes	No	No	No
self-seeking	Yes	Yes	No	No

As nouns, opportunism and self-seeking are synonyms defined as:

opportunism and self-seeking: taking advantage of opportunities without regard for the consequences for others

Other synonyms of opportunism include expedience, self-interest.

opportunism (noun)	self-seeking (noun)
taking advantage of opportunities without regard for the consequences for others	taking advantage of opportunities without regard for the consequences for others

opportunism (adjective)	self-seeking (adjective)
	concerned chiefly or only with yourself and your advantage to the exclusion of others