features of word use
phenomena of underextension and overextension
من سمات استخدام الكلمه =ظاهرتي التقلص والتمدد
. Underextension is a case in which the child will acquire a word for a particular thing and fail to extend it to other objects in the same category
Overextension is when the child will extend a word incorrectly to other similar things
Overextensionis more common and more noticeable