Supplementary
Completing or enhancing something.
Something additional; an extra.
Supplementary (adjective)
Additional; added to supply what is wanted.
Supplementary (noun)
Something additional; an extra.
Complementary (adjective)
Acting as a complement; making up a whole with something else.
Complementary (adjective)
Of the specific pairings of the bases in DNA and RNA.
Complementary (adjective)
Pertaining to pairs of properties in quantum mechanics that are inversely related to each other, such as speed and position, or energy and time. (See also Heisenberg uncertainty principle.)
Complementary (noun)
A complementary colour.
Complementary (noun)
One skilled in compliments.
Complementary (noun)
An angle which adds with another to equal 90 degrees.
Supplementary (adjective)
completing or enhancing something
“the development of databases supplementary to existing ones”
“the programme offers supplementary information about the news”
Supplementary (noun)
a supplementary person or thing.
Supplementary (noun)
a question asked in parliament following the answer to a tabled one.