
Binomial
Math Expression
Remember, 'binomial' in mathematics specifically refers to an expression with two terms. 
Math Operation
'Binomial' does not imply a specific operation; it can be addition, subtraction, etc. a^2 - b^2 is a binomial involving subtraction.
Math Context
When you hear 'binomial' in math class, it might relate to binomial theorem or coefficients. The binomial theorem simplifies expressions like (x + y)^n.