Periods
Yes, the word 'lessons' is a noun, the plural form for the noun 'lesson'; a word for a unit, or single period of instruction in a subject, a class; something from which useful knowledge or principles can be learned; a reprimand or punishment intended to correct.
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Yes, the word 'years' is a noun, the plural form of the noun year, a common, abstract noun, a word for a thing.
The plural form of can is cans.
The plural for the noun loss is losses; the plural possessive is losses'.
The plural of the noun "fast" (period without food) is fasts.
The word period is a noun. The plural form is periods.
Chukka (sing.), Chukkas (plural)
The plural is Ph.Ds or PhDs (people) and the plural possessive is PhDs'.(the abbreviation with a period or periods is normally used after a name)
The noun "hour" is a singular noun, a word for one60 minute period of time.The plural noun is "hours" a word for two or more 60 minute period of time.
The abbreviation for number is No. (has a period at the end). Numbers plural is Nos. (again a period at the end).
Singular - yd (w/ or w/o period (.) Plural - yds (w/ or w/o period (.)
The plural of ottoman, meaning a low upholstered seat without a back or arms, typically serving also as a box, is ottomans The plural of Ottoman, meaning a Turk, especially of the Ottoman period, is Ottomans
Yes, the plural of the noun 'youth' is youths.The plural noun 'youths' is a word for two or more young people.The noun 'youth' as a word for a period in one's life is an uncountable noun.
If there is a period after each letter as in "A.T.M." plural would be "A.T.M.'s" If the word is not separated with periods as in "ATM" plural would be "ATMs"
A period of 1000 years is a millennium (plural millenia).
A millennium (plural millennia or millenniums) is a period of time equal to 1,000 years.