Atlantic
The plural form of "ocean" is "oceans." It is used to refer to more than one ocean, such as the Atlantic, Pacific, Indian, and Arctic Oceans.
"Italians" is the plural form of the English noun "Italian." The proper noun needs to follow the standard rule for pluralization in English by adding an -s at the end. The pronunciation will be "ih-TEL-yunz" in one of the Mid-Atlantic dialects of the English spoken in the United States of America.
Singular ' He/She is Plural 'They are NB Notice they change of verb. NNB 'They is' is NOT correct English.
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
The plural of rose is roses. The plural possessive is roses'.
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 form of can is cans.
As you have given it. Singular ; Knight Plural ; Knights The word 'knight' comes from the Old English/Germainic word 'knabe' . In modern terms ' knave'.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.
The plural for the noun loss is losses; the plural possessive is losses'.