The present study deals with the rhetorical and critical terms, for the importance of a term in the use of many sciences and the knowledges. The term has helped in the stability of these many sciences and knowledges.Concerning this study , it tackled (critical and rhetorical) sides which are mentioned (explaining the book of (Abi tamam) for the preacher (AL-tabrezi) died in (502 A.D.) for the importance of Abi-tamam poetry in the Arabic literature and for its role with the researchers and the critics and the people who seek knowledge added to this, the poetry of Abi-tamam had contained the colors of the profiencey and clearance which are considered one of the sciences (the science of rhetorical) .The base of this thesis was based on mentioning the term linguistically . then defining it terminologically and getting this term back to Tabrezi in order to state its situation concerning these terms.