Romanist vs popish

Romanist and popish both are adjectives.

Word	Noun	Adjective	Verb	Adverb
Romanist	No	Yes	No	No
popish	No	Yes	No	No

As adjectives, Romanist and popish are synonyms defined as:

Other synonyms of Romanist include papist, papistic, papistical, R.C., Roman, Roman Catholic, romish.

Romanist (adjective)	popish (adjective)
of or relating to or supporting Romanism	of or relating to or supporting Romanism