Once we started communicating with emojis, actual language was doomed. Yea (sounds like "yay") is from the Bible or an affirmative vote, whereas "yeah" is slang for yes.

Another one I see a lot in texts: "awe!" instead of "aw!" responding to something cute or sweet.

Was an editor for many years. Painful to watch our nuanced language skills devolve to happy faces and cartoon characters.