interregnum /in-tər-regˈnəm/

1. The time between two reigns
2. The time between the cessation of one and the establishment of another government
3. Any breach of continuity in order, etc

• cotingas
• Cotingidae
• cotinine
• cotinines
• cotise
• cotised
• cotises
• cotising
• cotland
• cotlands
• cotoneaster
• cotoneasters
• cotquean
• cotqueans
• co-trimoxazole
• cots
• Cotswold
• Cotswold lion
• cott
• cotta
• cottabus
• cottabuses
• cottage
• cottage cheese
• cottage cheeses