Brains is both a plural usage of the word, and slang terminology to imply hitting someone about the head.
brains
The plural of brain is brains
the brain is spelled 'le cerveau' (masc., plural: des cerveaux) in French.
The word crises is a plural word; it is the plural form of the word crisis.
There is no plural word for if.
The plural form for the demonstrative pronoun this is these.
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
The plural word of delay is delays.
the plural word is comedones
No it's a singular word. A plural word would be "have".
Leukocytes is the plural of leukocyte
The plural noun is raisins.