topazes
The plural for for the noun glass is glasses.
rhombuses
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 word trajectory is a noun. The plural form is trajectories.
The singular form of the plural noun 'vertices' is vertex, a word for the highest point; the top or apex.
The plural of topaz is topazes.
The plural form for the demonstrative pronoun this is these.
The plural form of the word inferno is infernos.
The plural form is ranches.
There is no plural word for if.
There is no plural form for the word, countries. This word itself is a plural.
The plural form is data.
The plural form for the word 'pioneer' is pioneers.
The plural form of the word "baby" is "babies."
The plural form of the word "pharynx" is "pharynges."
The plural form of vow is vows.
There is no 'plural form' of the word 'minute'. The word is both singular and plural.