noun
common word; everyday expression; byword
Refers to a word or phrase that is widely used and understood in everyday conversation.
「ありがとう」は通り言葉として世界中で知られている。
"Arigatou" is known worldwide as a common expression.
noun
Used for specialized vocabulary within a particular group or field; can carry a slightly insider or slangy feel.
医者の使う通り言葉は患者にはわかりにくい。
The jargon doctors use is hard for patients to understand.