cheap vs tacky

cheap and tacky both are adjectives.

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

As adjectives, cheap and tacky are synonyms defined as:

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

cheap (adjective)	tacky (adjective)
relatively low in price or charging low prices	tastelessly showy
of very poor quality; flimsy	(of a glutinous liquid such as paint) not completely dried and slightly sticky to the touch
embarrassingly stingy
tastelessly showy