fric·tion /ˈfrɪkʃən/ Pronunciation[frik-shuhn]
–noun
1. surface resistance to relative motion, as of a body sliding or rolling.
2. the rubbing of the surface of one body against that of another.

guild /gɪld/
Pronunciation[gild]
–noun
1. an organization of persons with related interests, goals, etc., esp. one formed for mutual aid or protection.