Answer:Whole books are written about each of these art terms, filled with definitions,Expressive, gestural lines shout the force, speed and emotion put into their making. or lights) can set the mood of the piece, from mysterious to peaceful to ethereal. Unity is created by using harmonious similarity and repetition, continuance
The definition of unity is to bring things together. Unity helps create mood/ emotions by the things that it does bring together. For example if a piece of artwork has a lot of dark and shadowy areas, then maybe the mood is trying to be set as sad or isolated.