As proper nouns the difference between bologna and ha

is that bologna is a province of Emilia-Romagna, Italy while Ha is an ethnic and linguistic group based in Kigoma Region in western Tanzania.

As a noun bologna

is a smoked, seasoned Italian sausage made from beef, pork or veal.

As a verb ha is

alternate spelling of a4

As a pronoun ha is

a gender-neutral, third person singular subject pronoun, coordinate with gendered pronouns he and she.

As an interjection ha is

a representation of laughter.

As an initialism HA is

highways Agency.