Every individual has a unique way of speaking and writing, known as an
'idiolect'. As described last week, one's linguistic identity is comprised of several factors, such as profession, social class, family, gender and age. Every individual also has a way of speaking that marks him or her as a member of a group, known as a
'sociolect'. These
linguistic 'markers' are sometimes very specific to smaller groups or very typical of larger groups. They can be used, consciously or subconsciously, to show one's allegiance to a group.
For example, someone from Newcastle may use the word "yous" for the second person plural instead of the Standard British English "you". This linguistic marker would typify them as a speaker of Geordie. Not everyone from Newcastle speaks Geordie, however, which is why Geordie may be considered a kind of dialect known as a 'sociolect'.