The following was a part of a commercial mailing I received. You don't have to look at or buy their products. But if you would like to know many of  the technical terms in the hobby you might bookmark the following. Of course you could highlight and copy the whole thing, but you loose some of the functionality of the list.

It is kind of a slow read. But 'tis handy.

You may well have seen a useful article on some other commercial sales site. That is the sign of an outfit that wants their customers to grow in the aquarist's craft and stay around.