Polyamsensual is a form is form of non-monogamous relationship were you are capable of having sensual attraction/feelings with multiple people at once. Polyamsensual is identity is similar to Polyamory but instead of having sexual attraction with other people involved, it's sensual form of relationships.
This label can be usually seen used by ace-spectrum people or others who are or prefer sensual relationships. While polyamorous isn't inherently a sexual label it can be for some people be more comforting, an easy way to tell u aren't inherently a sexual polyamorous person or other reasons to use polyamsensual.
Resources
https://pride-color-schemes.tumblr.com/post/147080746790/polyamalterous-polyamsensual-polyplatonic