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'Silicon' is the metal.
'Silicone' is the shorthand name for fluids based upon the dimethyl siloxane repeat unit.
'Silicone spray' contains some low viscosity poly-dimethyl siloxane fluid in solvent, and hopefully some other additives..
Poly-dimethyl siloxane fluids have high surface tension, so do not wet out surfaces on their own, very well, but they are water resistant, so once on a surface tend to persist.
It is hard to argue against 'silicone spray' especially when you have non-matching synthetic surfaces in contact.
Some have moved onto the (sometimes much) more expensive 'teflon/ptfe spray'.
Silicon spray.
Not sure of the spelling Silicone/Silicon. Hopefully someone can clear that up. I'd be pleased to know if there's something better but I've carried a can of this for drawers and squeaky plastic and it's lasted 20 years so far.