Cherub is the singular form. Cherubs is the plural form and Cherubim I believe is the collective whole!!
E.G: The Human walked on the Moon,
The Humans' walked on the Moon,
The Human Beings walked on the Moon.
Chat with our AI personalities
the seraph lives above uss in the heavens
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of rose is roses. The plural possessive is roses'.
Knights is a plural. It is the plural for knight.
applied is does not have a plural but is apply it does have a plural.