Similar to cassida
- castanea – a chestnut or chestnut
- cassis – a metal helmet
- casses – a net, snare, spider's web, trap
- castor – beaver
- castrum – castle, fort, fortified encampment, fortress, station
- castellum – castle, citadel, fort, fortress, refuge, shelter
- castro – castrate, emasculate, enervate, unman, weaken