"a sad expression"
"a look of triumph"
"an angry face"
"tears are an expression of grief"
"the pulse is a reflection of the heart's condition"
"expressions of good will"
"he helped me find verbal expression for my ideas"
"the idea was immediate but the verbalism took hours"
"pardon the expression"
"he suggested a better formulation"
"his manner of expression showed how much he cared"
"I concluded from his awkward constructions that he was a foreigner"
"the expression of milk from her breast"