Not sure where you're from, but the way it seems to have fallen now is Irish Gaelic is called Irish and Gaelic (pronounced "gallic") is usually the Scottish variant.

Unless you know better, or of some reform, in which case I defer!

It's theorized that Gaelic was introduced to Scotland from Ireland only in the 5h century or so. We know very little about Pictish that was spoken there before it, it was probably Celtic but we don't even know that for sure.

As others have commented, the Irish language is called Irish when describing it in English, and Gaeilge in the language itself.

Online people can get a bit snippy about calling it the wrong thing, even though they don't necessarily have a great grasp of the language itself. There's a lot of post-colonial baggage with regard to people's relationship with the language (IMO)

In Ireland, the term Gaelic typically refers to the general Irish identity and culture. Almost always, when people use the term Gaelic in everyday speech they're referring to Gaelic Games, which are the indigenous sports of Ireland. Gaelic Football, Hurling, Handball, and rounders. The GAA ( Gaelic Athletic Association ) that governs the games are in every village, town, and city, and the sports are probably the strongest expression of Gaelic culture in the country.

Some highlights of the 2 most popular games.

Gaelic Football https://www.youtube.com/watch?v=FT5Zjx4fTXI

Hurling: https://www.youtube.com/watch?v=I1Vw66Zs0dQ

> Fun fact; Cumbria is named in the same way as Cymru, as Welsh was once spoken there too.

Wasn't that how all Britons referred to themselves throughout what is now England back in the day?