However, although, nevertheless, on the other hand (introducing a clause contrary to prior belief or in contrast with the preceding clause or sentence).
On the contrary, rather (as a regular adversative conjunction, introducing a word or clause in contrast or contradiction with the preceding negative clause or sentence).
(colloquial) Used at the beginning of a sentence to express opposition to a remark.
Except that (introducing a subordinate clause which qualifies a negative statement); also, with omission of the subject of the subordinate clause, acting as a negative relative, "except one that", "except such that".
(colloquial) Used to link an interjection to the following remark as an intensifier.
Without it also being the case that; unless that (introducing a necessary concomitant).
(obsolete) Except with; unless with; without.
(obsolete) Only; solely; merely.
(obsolete) Until.
(obsolete) That.

An instance of using the word "but"; an objection or caveat.
The outer room of a small two-room cottage.
A limit; a boundary.
The end; especially the larger or thicker end, or the blunt, in distinction from the sharp, end; the butt.

Use the word "but".