Kind of. Both merge and rebase result in the branches "synced up" but they do it in different ways.

Merge is making a batter for cookies, having a bowl for dry ingredients (task branch) and a bowl for wet ingredients, (master branch) making them separately and then just dumping the dry bowl into the wet bowl (merge).

Rebase is taking a time machine back to before you started mixing the dry ingredients, mix all the wet ingredients first then add the dry ones on top of that in the same bowl.

It's really hard to create an analogy for this.