Probably not the right place but hopefully this post will help someone.
It may seem pedantic but it can make a big difference, for example when applying for benefits or paperwork for EHCPs. Learning difficulties and a learning disability are completely different things.
In a nutshell a learning disability affects all aspects of learning and intelligence (resulting in a low, less than 70, IQ) whilst a learning difficulty is related to a specific aspect of learning ( e.g. dyslexia) and doesn't affect an individual's overall IQ.
(Autism is neither of these things, but that's a different thread completely)