but

conjunction:used to introduce an added statement, usually something that is different from what you have said before
- We ran after him, but he escaped.
conjunction:except; apart from
- There was nothing we could do but wait.
preposition:except; other than
- Everyone but Mia agreed to the change.
adverb:only; merely
- He is but a beginner.
noun:an objection or excuse
- She accepted the offer without a single but.
interjection:used to express protest, surprise, or objection
- But that’s not what we agreed.