Heart and soul and Mental object

Heart and soul noun - The choicest or most essential or most vital part of some idea or experience.

Mental object and heart and soul are semantically related. In some cases you can use "Mental object" instead a noun phrase "Heart and soul".

Mental object noun - The sum or range of what has been perceived, discovered, or learned.

Heart and soul and mental object are semantically related. Sometimes you can replace phrase "Heart and soul" with "Mental object", this phrases are similar.