天赋 (tiānfù) refers to an innate ability or natural gift in a specific area, like music or language. It's similar to 天分 (tiānfèn), which is slightly more colloquial for natural endowment, while 天才 (tiāncái) can mean both exceptional talent and a person who has it (genius). 资质 (zīzhì) emphasizes natural aptitude or suitability for a field.