A "branch" is a line of development. The most recent commit on a branch is referred to as the tip of that branch. The tip of the branch is referenced by a branch head, which moves forward as additional development is done on the branch. A single Git repository can track an arbitrary number of branches, but your working tree is associated with just one of them (the "current" or "checked out" branch), and HEAD points to that branch.

ブランチ（branch）

チェックアウト（checkout）

マージ（merge）

リベース（rebase）

コミット（commit）

git branch -- ブランチ情報の表示およびブランチの作成

git checkout -- ブランチの切り替え

git init -- リポジトリを作成する

git commit -- 変更点をコミットする