"indigenus" is not a noun or pronoun, it does not therefore have a plural.
The plural noun 'Arawaks' is a proper noun, the name of an indigenous group of people of South America and the Greater Antilles.
"Inuk" refers to an individual person in the Inuit culture, while "Inuit" is the plural form referring to the indigenous people of the Arctic regions.
Like grass, moss is not generally referred to in plural, except when referring to different types of moss, in which case the plural form is mosses.
Singular ; this and that Plural ; these and those
Yes, there are indigenous tribes in Guatemala
All animals are indigenous to somewhere. Kangaroos are indigenous to Australia.
The plural of 'bunch' is bunches.The plural of 'ant' is ants.The plural of 'batch' is batches.The plural of 'day' is days.The plural of 'chimney' is chimneys.The plural of 'tomato' is tomatoes.The plural of 'umbrella' is umbrellas.The plural of 'donkey' is donkeys.The plural of 'sky' is skies.The plural of 'foot' is feet.The plural of 'show' is shows.
The plural of rose is roses. The plural possessive is roses'.
The plural for the noun loss is losses; the plural possessive is losses'.
pluralsThe word plurals is the plural of plural. As in: I answered the question about plurals to the person who didn't know that the plural of plural is plurals.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.