There are three states of matter, solid, liquid, and gas.
What sentence
That rock is a solid object.
I am not writing a sentence using that word.
The first is the comparatively very high lattice enthalpy of the solid fluoride.
The door is a solid object.
a sentence using the word endotracheal
This is a sentence using the word aviator.
Joe is solid. Most responders here are solid. Just means someone you can count on (as slang)
Humans cannot walk on water, because humans are solid and water is liquid.
Our subject today is "Native America Customs". The subject of the police investigation had a solid alibi.
this is a sentence using the word armchair.