typographical error vs typo

typographical error and typo both are nouns.

Word	Noun	Adjective	Verb	Adverb
typographical error	Yes	No	No	No
typo	Yes	No	No	No

As nouns, typographical error and typo are synonyms defined as:

typographical error and typo: a mistake in printed matter resulting from mechanical failures of some kind

Other synonyms of typographical error include erratum, literal, literal error, misprint.

typographical error (noun)	typo (noun)
a mistake in printed matter resulting from mechanical failures of some kind	a mistake in printed matter resulting from mechanical failures of some kind