false vs spurious

false and spurious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
false	No	Yes	No	Yes
spurious	No	Yes	No	No

false (adjective)	spurious (adjective)
not in accordance with the fact or reality or actuality	false or fake; not what it appears to be
not genuine or real; being an imitation of the genuine article	plausible but false
adopted in order to deceive	born out of wedlock
designed to deceive	ostensibly valid, but not actually valid
(used especially of persons) not dependable in devotion or affection; unfaithful
arising from error
inaccurate in pitch
deliberately deceptive
erroneous and usually accidental
inappropriate to reality or facts

false (adverb)	spurious (adverb)
in a disloyal and faithless manner