combination

As a noun combination

is the act of combining, the state of being combined or the result of combining.

As nouns the difference between combination and concatenation

is that combination is the act of combining, the state of being combined or the result of combining while concatenation is (countable) a series of links united; a series or order of things depending on each other, as if linked together; a chain, a succession.

As a noun combination

is the act of combining, the state of being combined or the result of combining.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between combination and collaboration

is that combination is the act of combining, the state of being combined or the result of combining while collaboration is (uncountable) the act of collaborating.

As nouns the difference between combination and exchange

is that combination is the act of combining, the state of being combined or the result of combining while exchange is an act of exchanging or trading.

As a verb exchange is

to trade or barter.

As nouns the difference between individual and combination

is that individual is a person considered alone, rather than as belonging to a group of people while combination is the act of combining, the state of being combined or the result of combining.

As an adjective individual

is relating to a single person or thing as opposed to more than one.