Major part of the study of labor law and collective bargaining is the unique vocabulary that has developed over the period of time; accordingly, define the following terms and concepts:
a) Closed Shop
b) National Unions
c) American Federation of Labor (AFL)
d) Strikebreakers
e) Arbitrators
f) Good-faith Bargaining
g) Picketing
h) Boycotts
i) Sympathy Strike
j) Secondary Boycotts
k) Yellow-dog Contracts