Are arm and arms, sands, cloth and clothes countable nouns or uncountable nouns?

Arm countable
Arms is uncountable
1. Cloth (cotton, wool, synthetic fiber, etc.) fabric
five yards of cloth
Five yards of cloth
a piece of cloth
a piece of cloth
2. Cloth; tablecloth; napkin
3. The profession of a priest
Sands is uncountable
Clothes are not countable

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