If the accessories were designed by the manufacturer of the microwave cooker there will be no problems, no matter what they are made of. Its metal objects that the cooker was not designed for that are problems, especially foil or wire as they are high resistance and can cause fires.

A microwave is, in fact, a microwave

Any adjective you want. An adjective is any describing word, so however you want to describe a microwave, just use that word. Here are a few good ones:

big microwave

wet microwave

old microwave

broken microwave

white microwave

dirty microwave

weird microwave

super, incredible, heavy-duty microwave

Too easy!

microwave oven is one the example of microwave.

Microwave is applying microwave radiation to chemical reaction.