informercial vs infomercial

informercial and infomercial both are nouns.

Word	Noun	Adjective	Verb	Adverb
informercial	Yes	No	No	No
infomercial	Yes	No	No	No

As nouns, informercial and infomercial are synonyms defined as:

informercial and infomercial: a television commercial presented in the form of a short documentary

informercial (noun)	infomercial (noun)
a television commercial presented in the form of a short documentary	a television commercial presented in the form of a short documentary