All nouns are either;

Nouns ending in a consonant are usually;

Nouns ending in a silent -e after two consonants are usually;

Nouns referring to people (jobs, nationalities, etc) usually have a ... & ... form.

Most nouns add -... to make them plural?

Those ending in -..., -... or -... stay the same.

Nouns ending in -al change to -...

Nouns ending in -eau or -eu add -...