As nouns the difference between concession and concessive

is that concession is the act of conceding, especially that of defeat while concessive is (grammar) a phrase or clause that acts as a concession, such as "even if" or "although".

As a verb concession

is to grant or approve by means of a concession agreement.

As an adjective concessive is

of, pertaining to, or being a concession; conceding.

As a proper noun caucasus

is a mountain range in eastern europe and west asia, between the black sea and the caspian sea, on the territory of russia, georgia, armenia and azerbaijan, which includes the ranges of greater caucasus and lesser caucasus.

As a noun kamancheh is

a stringed instrument with three metal strings, played with a bow common among peoples of caucasus, anatolia and the near east.

As a proper noun anatolia

is anatolia (a peninsula of western asia).

As a noun kamancheh is

a stringed instrument with three metal strings, played with a bow common among peoples of caucasus, anatolia and the near east.

As a numeral set

is seven.

As an adjective pointwise is

(mathematics) occurring at each point of a given set.

Quinquagenarian is a synonym of fiftysomething.

As nouns the difference between quinquagenarian and fiftysomething

is that quinquagenarian is one who is between the age of 50 and 59, inclusive while fiftysomething is (countable|colloquial) a person aged between 50 and 59 years.

As an adjective quinquagenarian

is being between the age of 50 and 59, inclusive.

As a numeral fiftysomething is

between fifty and sixty.

As numerals the difference between fifty and fiftysomething

is that fifty is the cardinal number occurring after forty-nine and before fifty-one while fiftysomething is between fifty and sixty.

As nouns the difference between fifty and fiftysomething

is that fifty is a fifty-dollar bill while fiftysomething is a person aged between 50 and 59 years.

As numerals the difference between sixty and fiftysomething

is that sixty is the cardinal number occurring after fifty-nine and before sixty-one, represented in roman numerals as lx and in arabic numerals as 60 while fiftysomething is between fifty and sixty.

As a noun fiftysomething is

(countable|colloquial) a person aged between 50 and 59 years.

As nouns the difference between letters and letterure

is that letters is while letterure is (archaic) letters; literature.

As a verb letters

is (letter).

As nouns the difference between literature and letterure

is that literature is the body of all written works while letterure is letters; literature.

Freeper is a see also of kossack.

As nouns the difference between freeper and kossack

is that freeper is (slang|pejorative) a person who frequents free republic, a right-wing website and forum while kossack is (us|politics|internet slang) a member of the progressive us blogging community (daily kos).