What's the difference between HEAD^ and HEAD~ in Git?

Question

When I specify an ancestor commit object in Git, I\'m confused between HEAD^ and HEAD~.

Both have a \"numbered\" version like HEAD^3<

Answer 1

~ this means parent.

^ if it has parents of two or more, like merge commit, we can select second of parent or another.

so if just one thing like (HEAD~ or HEAD^), it has same results.