The noun research is an uncountable noun, a word for the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.
The noun research is a word for a concept, expressed as some research, a lot of research, a little research, etc.
The word research is also a verb: research, researches, researching, researched.
Research cannot be in the plural because it is an uncountable noun.
no . . . . . . plural for scientist is scientists.
Histologies, would be plural of histology.
the singular term is TRIVIUM. Trivia is already in plural form
The word necessary is an adjective and so doesn't have a plural noun. The noun form is necessity and the plural is necessities.
The plural form for the demonstrative pronoun this is these.
Research cannot be in the plural because it is an uncountable noun.
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.