Some Urartian terms are discussed in this paper of Armen Petrosyan.
+Urart. personal name Lubšuṣini is etymologized as Arm. lousacin "luminous" / "born of light"
Note that Urartian [b] can denote the phoneme [w] so this personal name can be related to Armenian Lousacin. Old form would be Lousocin.
+ Arm. kot‘oɫ կոթող “monument, tower” corresponds to Urart. qudula-ni "temple, tower", which denoted the specific tower temples of Haldi.
Apparently the Armenian word kot'ol is a loanword from the Urartian.