The asexual spectrum or the asexual umbrella describes a range of degrees of identification with asexuality, a sexual orientation.[1] According to the 2016 asexual community census, about 29.5% of asexual community members who took the survey are aromantic, and 13.7% are gray-romantic.[2]
The concept of romantic orientation is not unique to the asexual community, but that is one of the communities where it's the most commonly used.