• bilstone,
• ailtstone,
• ziltstone,
• xiltstone,
• diltstone,
• eiltstone,
• wiltstone,
• sultstone,
• sjltstone,
• skltstone,
• soltstone,
• s9ltstone,
• s8ltstone,
• siktstone,
• siptstone,
• siotstone,
• silrstone,
• silfstone,
• silgstone,
• silystone

• conglomerate,
• limestone,
• basalt,
• chert,
• quartzite,
• schist,
• shale,
• slate,
• Granitoid,
• gneiss,
• mudstone,
• sandstone.

The adjective form of the word "siltstone" is "siltstone". The word itself can function as both a noun and an adjective. For example, one can say "a siltstone rock" to describe a type of rock composed of silt-sized particles.

The plural of the "siltstone" can be the "siltstones".

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