Merge and rebase are two different approaches to get changes from one branch to another.

Let's assume we are trying to get the latest changes from the main to a feature branch we are currently developing.

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Merge

Takes the latest changes from the main and creates a new commit in the feature branch.

Commands:

git checkout feature-branch
git merge main

Pros:	Cons:
Preserves the whole commit history.	Can get messy with more details.

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Rebase

Changes the base of a feature branch to the latest commit on the main and then places the feature branch changes from there.

Commands:

git checkout feature-branch
git rebase main

Pros:	Cons:
Linear and cleaner commit history.	Reduced traceability