sign language morphology
it appears that sign languages are rich in morphology.
like spoken languages they have root and affix morphemes fee and bound morphemes, lexical content and grammatical morphemes, derivational and inflectionl morpheme, and morphological rules their combination to form signed words.
figure 3.1 illustrat the derivational process in ASL that is rquivalent to the formation of the nouns comparison and measuring from verbs compare and measure