When it comes to expressing the act of caring about someone or something, there are numerous synonymous words that can be used. Words such as affection, concern, empathy, love, warmth, kindness, tenderness, and compassion can all depict the sentiment of caring about someone or something. Similarly, words like nurturing, supporting, protecting, investing, encouraging, and championing can also connote the idea of caring. A person who cares deeply about others can be dubbed as empathetic, kind-hearted, loving, supportive, or nurturing. In conclusion, there are plenty of synonyms to choose from when describing the act of caring, making it easy to convey the intended sentiment effectively.