Nouns

(n)expression, look, aspect, facial expression, facethe feelings expressed on a person's face“a sad expression”, “a look of triumph”, “an angry face”
(n)expression, manifestation, reflection, reflexionexpression without words“tears are an expression of grief”, “the pulse is a reflection of the heart's condition”
(n)expression, verbal expression, verbalismthe communication (in speech or writing) of your beliefs or opinions“expressions of good will”, “he helped me find verbal expression for my ideas”, “the idea was immediate but the verbalism took hours”
(n)saying, expression, locutiona word or phrase that particular people use in particular situations“pardon the expression”
(n)formulation, expressionthe style of expressing yourself“he suggested a better formulation”, “his manner of expression showed how much he cared”
(n)formula, expressiona group of symbols that make a mathematical statement
(n)expression(genetics) the process of expressing a gene
(n)construction, grammatical construction, expressiona group of words that form a constituent of a sentence and are considered as a single unit“I concluded from his awkward constructions that he was a foreigner”
(n)expressionthe act of forcing something out by squeezing or pressing“the expression of milk from her breast”