349. Celerity, Swiftness

Celerity: Speed
Swiftness: Quickness

350. Chide, Scold

Chide: Rebuke mildly
Scold: Reprimand

351. Coerce, Compel

Coerce: Force
Compel: Make necessary

352. Coherent, Logical

Coherent: Consistent
Logical: Reasonable

353. Colloquial, Informal

Colloquial: Conversational
Informal: Casual

354. Commend, Praise

Commend: Express approval

355. Complacency, Satisfaction

Complacency: Self-satisfaction
Satisfaction: Contentment

356. Concede, Admit

357. Conspicuous, Noticeable

Conspicuous: Easily seen
Noticeable: Observable

358. Contentious, Disputable

Contentious: Causing argument
Disputable: Open to debate

359. Contrite, Remorseful

Contrite: Feeling guilt
Remorseful: Full of regret

360. Convoluted, Complex

Convoluted: Extremely complicated
Complex: Not simple