Sentence:  We can then establish and name further categories by means of the word "group" and the prefix "sub-", thus obtaining SUBDIALECT ("Untermundart") between <WSD>topolect</WSD> and dialect, DIALECT GROUP ("Mundartengruppe") between dialect and language, SUBFAMILY ("Unterfamilie") between language and family, 
Meaning of the word marked with <WSD> tags:  The speech form, variety (lect) of a particular place or region.