skirting board vs mopboard

skirting board and mopboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
skirting board	Yes	No	No	No
mopboard	Yes	No	No	No

As nouns, skirting board and mopboard are synonyms defined as:

skirting board and mopboard: a molding covering the joint formed by a wall and the floor

Other synonyms of skirting board include baseboard.

skirting board (noun)	mopboard (noun)
a molding covering the joint formed by a wall and the floor	a molding covering the joint formed by a wall and the floor