1) Adherence 2) Adhesion 3) Bond 4) Stickiness 
• (n.) The quality of sticking or adhering; stickiness; tenacity of union. • (n.) Propensity to form and maintain attachments to persons, and to promote social intercourse.
Ad·he'sive·ness noun 1. The quality of sticking or adhering; stickiness; tenacity of union. 2. (Phren.) Propensity to form and maintain attachments to persons, and to promote social intercourse. 
[n] - the property of sticking together (as of glue and wood) or the joining of surfaces of different composition
adhesion noun the property of sticking together (as of glue and wood) or the joining of surfaces of different composition