Endearment

"Sky" and "heart" are terms of endearment in Spanish.

In Russian, the words for "caress, endearment" and "least weasel" are homonymous and possibly related etymologically.

Every step of that walk led Jeff deeper into an excursion of endearment. It was amazingly true that he trod beside her an acknowledged friend, a secret lover.

He could not forget the fond and earnest look that had passed between her and some other man—the attitude of familiar confidence, if not of positive endearment.

When they were alone he called him "my boy," an endearment he never gave another.