Definitions by aesthetically

Finsta 

short for "fake instagram". used for ugly selfies, memes, inside jokes, etc. Usually has humorous names as the username, such as a misspelling of users name.

Amelia : lmao that pic ugly af. tag my finsta
Bianca : gotchu fam

Finsta by aesthetically September 2, 2017

Rinsta 

short for "real instagram". Usually contains aesthetics, themes, and good quality photos. Known as the "official" instagram of the user.
see also : finsta

Amelia : This picture is gorgeous ! I'll put in on my rinsta.

Rinsta by aesthetically September 2, 2017