IA vs Ia.

IA and Ia. both are nouns.

Word	Noun	Adjective	Verb	Adverb
IA	Yes	No	No	No
Ia.	Yes	No	No	No

As nouns, IA and Ia. are synonyms defined as:

Other synonyms of IA include Hawkeye State, Iowa.

IA (noun)	Ia. (noun)
a state in midwestern United States, with capital Des Moines	a state in midwestern United States, with capital Des Moines