stamp pad vs inkpad

stamp pad and inkpad both are nouns.

Word	Noun	Adjective	Verb	Adverb
stamp pad	Yes	No	No	No
inkpad	Yes	No	No	No

As nouns, stamp pad and inkpad are synonyms defined as:

stamp pad and inkpad: a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp

Other synonyms of stamp pad include inking pad, pad.

stamp pad (noun)	inkpad (noun)
a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp	a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp