Case namings

I've always referred to Camel Case as the case whereby the first letter is lower case and all compound Words thereafter are uppercase.

e.g. backColour or orderRefundId

this is how you'd name fields in .NET.

and Pascal Case is whereby the first letter is capitals (e.g. properties in .NET).

e.g BackColour or OrderRefundId

....confusingly though Camel Case can refer as upper camel case (Pascal case) or lower Camel Case. Typically though if it is not specifically mentioned then Camel Case is lower camel case.