To come to terms with someone means to agree on some matter, to come to terms with something means to accept an undesired state of things.
To make peace with someone is to let go of old grievances, to make peace with something is to accept an unpleasant reality and let it go.
I have finally come to terms with my life as a stay-in mom.
What’s the use of holding on to a decades-old strife that our grandparents started? Why don’t we make peace with each other now and settle things amicably?