SINGULAR NOUN VERSES PLURAL NOUN----Singular noun is used to indicate one person or a thing.
Example--Boy, Dog, Man , etc. A plural Noun is used to denote more than one persons or things.
Example--Boys, Dogs, cats, Men etc.RULES FOR CONVERTING SINGULAR INTO PLURAL--
Generally 's' is address to the singular to make it plural. But in the given cases we have to apply -'es' 'en' and other suffixes are added to make it plural.
Singular. Plural
Boy. Boys
Girl. Girls
Pen. Pens
Rules for changing singular into plural:
1)A singular noun end with vowel letter, generally takes "-s" t&o make itself plural
Singular. Plural
Pea. Peas
Sea. Seas
Papaya. Papayas
2)A singular noun end with 's', 'x', 'sh', 'ss', 'ch', pounced as cha in Hindi generally takes 'es'after it to make itself plural.
Singular. Plural
Bus. Buses
Box. Boxes
Bush. Bushes
Class. Classes
Church. Church etc.
3)