I'm not a lawyer, but from this link :
"Solicitors are lawyers who give legal advice to clients and prepare legal documents and cases. Solicitors often specialise in different areas: there are, for example, family law solicitors and company law solicitors."
... which I interpret to mean that solicitors are lawyers with specialized skills. More senior maybe.
I suppose legal service managers and legal officers also play specialized roles.
I'm really not too sure... can any lawyer reading give some free advice?