Most Semitic verbs are triliteral (have three consonants), whereas most Chadic, Omotic, and Cushitic verbs are biliteral (having two consonants). The degree to which the Proto-AA verbal root was triliteral is debated. It may have originally been mostly biconsonantal, to which various affixes (such as verbal extensions) were then added and lexicalized. Although any root could theoretically be used to create a noun or a verb, there is evidence for the existence of distinct noun and verb roots, which behave in different ways.
Most Semitic verbs are triliteral (have three consonants) whereas most Chadic Omotic and Cushitic verbs are biliteral (having two consonants) The degree to which the Proto-AA verbal root was triliteral is debated It may have originally been mostly biconsonantal to which various affixes (such as verbal extensions) were then added and lexicalized Although any root could theoretically be used to create a noun or a verb there is evidence for the existence of distinct noun and verb roots which behave in different ways