cohesion
noun /kəʊˈhiːʒn/
  /kəʊˈhiːʒn/
[uncountable]- (formal) the act or state of keeping together synonym unity
- the cohesion of the nuclear family
 - social/political/economic cohesion
 
 - (physics, chemistry) the force causing molecules of the same substance to stick together
 
Word Originmid 17th cent.: from Latin cohaes- ‘cleaved together’, from the verb cohaerere, from co- ‘together’ + haerere ‘to stick’, on the pattern of adhesion.