launching pad vs launch pad

launching pad and launch pad both are nouns.

Word	Noun	Adjective	Verb	Adverb
launching pad	Yes	No	No	No
launch pad	Yes	No	No	No

As nouns, launching pad and launch pad are synonyms defined as:

launching pad and launch pad: a platform from which rockets or space craft are launched

Other synonyms of launching pad include launch area, launchpad, pad.

launching pad (noun)	launch pad (noun)
a platform from which rockets or space craft are launched	a platform from which rockets or space craft are launched