We have been trying to count our 20 month old's vocabulary and are trying to decide if words which she has learned incorrectly (words which are said correctly but may require further context for a listener) count to a professional?
As an example, a 7 year old sibling introduced some 20p coins ( as twenty pees ) and now pee is used to mean money. She's correct that a coin would be something 'pee' but would you count it?