tacky vs flashy

tacky and flashy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tacky	No	Yes	No	No
flashy	No	Yes	No	No

As adjectives, tacky and flashy are synonyms defined as:

Other synonyms of tacky include brassy, cheap, flash, garish, gaudy, gimcrack, loud, meretricious, tatty, tawdry, trashy.

tacky (adjective)	flashy (adjective)
tastelessly showy	(used especially of clothes) marked by conspicuous display
(of a glutinous liquid such as paint) not completely dried and slightly sticky to the touch	tastelessly showy