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/romantic 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