Plural of nouns

When a noun means "one only," it is said to be …

When a noun means "more than one," it is said to be …

Nouns ending in s, z, x, ch, and sh form their plural by adding …

The plural of nouns ending in "y" preceded by a consonant is formed by changing "y" to …

Nouns ending in "y" preceded by a vowel form their plural by adding …

Most nouns ending in "o" preceded by a consonant form their plural by adding …

Nouns ending in vowels a, e, i, o, u + o form their plural by adding …

Loanwords ending in "o" form their plural by adding …

If a noun is a musical term or an instrument ending in "o," it forms its plural by adding …

If a noun ending in "o" is a short form of a word, it forms its plural by adding …