brainchild vs inspiration

brainchild and inspiration both are nouns.

Word	Noun	Adjective	Verb	Adverb
brainchild	Yes	No	No	No
inspiration	Yes	No	No	No

As nouns, brainchild and inspiration are synonyms defined as:

brainchild and inspiration: a product of your creative thinking and work

brainchild (noun)	inspiration (noun)
a product of your creative thinking and work	the act of inhaling; the drawing in of air (or other gases) as in breathing
	arousing to a particular emotion or action
	a product of your creative thinking and work
	(theology) a special influence of a divinity on the minds of human beings
	a sudden intuition as part of solving a problem
	arousal of the mind to special unusual activity or creativity