• caesum,
• xaesium,
• vaesium,
• faesium,
• daesium,
• czesium,
• csesium,
• cwesium,
• cqesium,
• cawsium,
• cassium,
• cesium,
• caseium,
• kaesium,
• cessium,
• casseum,
• Caysium,
• Caisiem,
• Caiseum,
• Kaysium

• cashion,
• Cason,
• casein,
• cashin,
• cage in,
• cesium 137,
• caecum,
• cesium,
• calcium.

The adjective form of the word "caesium" is "caesious".

The plural of the "caesium" can be the "caesiums".

The singular of the "caesium" can be the "caesium".