Which word best describes a warm or tender feeling toward another?

The word "affection" is best described as a warm or tender feeling toward another person. Affection conveys a sense of fondness, care, and warmth in relationships, indicating a positive emotional connection. It encompasses feelings that promote closeness and bond individuals, making it a vital component in establishing and maintaining healthy interpersonal relationships.

In contrast, the other terms relate to negative or neutral feelings. Hostility refers to an antagonistic or aggressive attitude, while indifference signifies a lack of interest or concern. Resentment involves feelings of anger or bitterness towards someone due to perceived unfair treatment or grievances. Thus, "affection" clearly stands out as the term that embodies warmth and tenderness.