Does bhavanasamvasah mean devas dwell together according to there similar mental karma
Not exactly.
In Jain usage, bhāvanā means a reflection, contemplation, or inner disposition, and it is primarily about the state of mind/soul rather than a literal rule that “devas dwell together.” ( jainpuja.com)
So if you mean bhāvanā-samvāsa / bhāva-samvāsa, the idea would be more like:
- beings with similar inner tendencies, dispositions, or mental states associate together,
- not specifically “devas live together because of similar mental karma.” ( encyclopediaofjainism.com)
If the word is from a particular text, I can interpret it more precisely in that exact Jain context.