Claim: Gurbani is made up of two words: 'Gur' and 'Bani' where gur has multiple meanings depending on the context even in Dasam Granth (central religious scripture of Sikhism),
Evidence: The Guru Granth Sahib (Punjabi: ਗੁਰੂ ਗ੍ਰੰਥ ਸਾਹਿਬ, pronounced [ɡʊɾuː ɡɾəntʰᵊ saːhɪb) is the central religious scripture of Sikhism, regarded by Sikhs as the final, sovereign and eternal living Guru following the lineage of the ten human gurus of the religion. 
It is traditionally considered as a sacred text secondary to the Guru Granth Sahib.