One study showed that Czech and Slovak lexicons differed by 80 percent, but this high percentage was found to stem primarily from differing orthographies and slight inconsistencies in morphological formation; Slovak morphology is more regular (when changing from the nominative to the locative case, Praha becomes Praze in Czech and Prahe in Slovak). The two lexicons are generally considered similar, with most differences in colloquial vocabulary and some scientific terminology. Slovak has slightly more borrowed words than Czech.
How much do the lexicons of Czech and Slovak differ, according to on study? What was the high percentage of differing lexicons found to derive from? When is Slovak morphology more regular than Czech? The most differences between Czech and Slovak can be found in colloquial vocabulary as well as what? What does Slovak have slightly more of than Czech?