tuppeny vs threepenny

tuppeny and threepenny both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tuppeny	No	Yes	No	No
threepenny	No	Yes	No	No

As adjectives, tuppeny and threepenny are synonyms defined as:

Other synonyms of tuppeny include sixpenny, two-a-penny, twopenny-halfpenny, twopenny.

tuppeny (adjective)	threepenny (adjective)
of trifling worth	of trifling worth
	used of nail size; 1 1/4 in long