Question: "sign" used in the same way in the following two sentences?

The hunters found deer sign at the end of the trail.

He showed signs of strain.
Answer: the same meaning
Question: "keep" used in the same way in the following two sentences?

These potatoes keep for a long time.

Keep the commandments.
Answer: different meanings
Question: "port" used in the same way in the following two sentences?

Port a rifle.

.. the angelic squadron ... began to hem him round with ported spears. -- Milton, Paradise Lost (1667), book IV.
Answer: the same meaning
Question: "sum" used in the same way in the following two sentences?

He borrowed a large sum.

A tidy sum.
Answer:
the same meaning