Binomials and trinomials

Binomial expressions: are common English phrases that include a pair of words usually joined by “and” or “or” (e.g. black and white, plain and simple, more or less). The order of the words is usually fixed, and they are a single chunk of English vocabulary. Trinomial Expressions: are common English phrases that include three words usually joined by comma and “and” or “or” (e.g. right, left and center, this, that and the other, etc). The order of the words is usually fixed, and they are a single chunk of English vocabulary.