It is very subtle. If we share meanings, then we will have a common purpose and a common value, which certainly will help hold us together. We have to go more deeply into what that means. They are really different aspects of the same thing. That is one idea of meaning.
Value is something which is part of it.
If something is very significant, you may sense it as having a high value. You might suppose that in early times, when people sensed something of high value they didn't have a word for it, although it moved them strongly. Later they found a word for it and said it has high value. And then later the word itself may convey that. If something is significant it may have a high value.