launching pad vs launchpad

launching pad and launchpad both are nouns.

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

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

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

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

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