jargon
Jargon refers to special words or expressions that are used by a particular profession or group and are difficult for others to understand.
joint Attention
Joint attention is a concept in childhood language development that refers to the awareness between two or more individuals that they are paying attention to the same thing.
jussive mood
Typically applicable in the first and third person, jussive mood is a directive mood that signifies that an interlocutor’s command, permission or agreement that the proposition expressed in his/her utterance be brought about.