rhombuses
The plural for for the noun glass is glasses.
topazes
The plural form of the tool 'saw' is saws. Saw is also the past tense of see, but because see is a verb, not a noun, the word 'sees' is not a plural.
The adjective for a rhombus or rhomboid is rhombic.
A rhombus is a square tilted on it's side. Or a rhombus is a diamond, or the sandbox looked like a rhombus.
The plural of rhombus can be rhombuses or rhombi.
There is no plural form for the word, countries. This word itself is a plural.
The plural form of the word "inferno" is "infernos."
There is no plural word for if.
The plural form is data.
There is no 'plural form' of the word 'minute'. The word is both singular and plural.
The plural of diary is diaries.
The plural form for the word 'pioneer' is pioneers.
The plural form of the word "baby" is "babies."
The plural form of the word 'deed' is 'deeds'.
The plural form of the word signal is signals.
The plural form of the word gelato is gelati.