Collective bargaining is the process by which a union and an employer negotiate the terms of employment.
Deficit spending occurs when a government's total expenditures exceed its total revenue.
Surrealism is a cultural movement that began in the late 1910s and is characterized by a dream-like quality and unexpected juxtapositions.
The uncertainty principle, first described by physicist Werner Heisenberg, states that it is impossible to simultaneously determine both the position and momentum of a subatomic particle with complete accuracy.