Dictionary.com
Thesaurus.com

separation of powers vs. checks and balances

[sep-uh-rey-shuhn uhv pou-erz] / ˈsɛp əˌreɪ ʃən əv ˈpaʊ ərz /

noun

  1. the principle or system of vesting in separate branches the executive, legislative, and judicial powers of a government.

[cheks uhn bal-uhn-siz] / ˈtʃɛks ən ˈbæl ən sɪz /

plural noun

  1. limits imposed on all branches of a government by vesting in each branch the right to amend or void those acts of another that fall within its purview.