恩 ēn – kindness

Main Words:

恩情    ēnqíng – grace, favor, affection (kindness + feeling)

恩人    ēnrén – benefactor (kindness + person)

Discussion and sources

Formerly I considered that it referred to "The feeling 心 towards the people who share one’s bed因. Due to the fact that in old China all the family slept on a big bed, it could originally refer to the feeling towards one’s family." But this idea can't explain the meaning of other components in this family, the invitation to rest instead allows for an easy understanding of 摁 push (someone to rest on the bed).