suru verb (special), transitive verb
Expresses deep affection for a person, thing, or concept. Can be used romantically, familially, or for abstract ideals.
私は家族を愛しています。
I love my family.
彼は音楽を愛している。
He loves music.
好き is a na-adjective expressing liking or fondness, often used for preferences and lighter affection. 愛する is a verb conveying a deeper, more committed love.
恋する specifically refers to romantic love or being in love, often with a sense of longing. 愛する is broader and can include familial, platonic, or abstract love.
Compound of 愛 (ai, 'love') + する (suru, 'to do'). The kanji 愛 is a phono-semantic compound, but the exact historical derivation of the word is straightforward as a Sino-Japanese verbalization.