clamber / clammer / clamor are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
clamber: (noun) an awkward climb. (verb) climb awkwardly, as if by scrambling.
clammer: NA
clamor: (noun) loud and persistent outcry from many people. (verb) make loud demands. (verb) utter or proclaim insistently and noisily. (verb) compel someone to do something by insistent clamoring.
clamber: k·l·AE·m·b·er
clammer: NA
clamor: k·l·AE·m·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)