I found all this on google and wikipedia

A binomial is an algebraic expression of the sum or the difference of two terms also

In mathematics:

Binomial (polynomial), a polynomial with two terms

Binomial coefficient, numbers appearing in the expansions of powers of binomials

Binomial QMF, a perfect-reconstruction orthogonal wavelet decomposition

Binomial theorem, a theorem about powers of binomials

Binomial type, a property of sequences of polynomials

In probability and statistics:

Binomial distribution, a type of probability distribution

Binomial test, a test of significance

In computing science:

Binomial heap, a data structure

In linguistics:

Binomial pair, a sequence of two or more words or phrases in the same grammatical category, having some semantic relationship and joined by some syntactic device

In biology:

Binomial nomenclature, a Latin two-term name for a species, such as Sequoia sempervirens

In finance:

Binomial options pricing model, a numerical method for the valuation of options