In English, some nouns are always plural.
Clothes. Even if it’s only one item.
Pants. Be careful. In Britain, the thing Americans call “pants” are “trousers” and “pants” are something you wear under your trousers. Cats don’t wear any of this, so we don’t care.
Belongings. Again, always plural.
Arms. Here I’m referring to “arms” as a synonym of “weapons”. It’s always plural. I think that’s a little sad.