well-timed vs apropos

well-timed and apropos both are adjectives.

Word	Noun	Adjective	Verb	Adverb
well-timed	No	Yes	No	Yes
apropos	No	Yes	No	Yes

As adverbs, well-timed and apropos are synonyms defined as:

Other synonyms of well-timed include seasonably, timely.

well-timed (adjective)	apropos (adjective)
done or happening at the appropriate or proper time	of an appropriate or pertinent nature

well-timed (adverb)	apropos (adverb)
at an opportune time	at an opportune time
	introducing a different topic