They both suggest a putting together of different elements, whether it be people rocks, biological stuff or psychological elements. Integration implies a thorough mixing while inclusion implies that after mixing there is still some discrete fragmented element from the original disparate parts. The pictures of kersanite in the link are a nice visual initiation.
Feel free to be the first
Please review the linked page for context.
If you can think of something better than this,
please add it to the database