nebula vs formulation

nebula and formulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
nebula	Yes	No	No	No
formulation	Yes	No	No	No

As nouns, formulation is a hypernym of nebula; that is, formulation is a word with a broader meaning than nebula:

Other hypernyms of nebula include preparation.

nebula (noun)	formulation (noun)
(pathology) a faint cloudy spot on the cornea	inventing or contriving an idea or explanation and formulating it mentally
an immense cloud of gas (mainly hydrogen) and dust in interstellar space	the style of expressing yourself
cloudiness of the urine	a substance prepared according to a formula
a medicinal liquid preparation intended for use in an atomizer