The word 'tubercule' is a specific medical term that generally refers to a small lump or swelling. When it comes to synonyms for this word, there are several options. One of the most common synonyms for 'tubercule' is 'tubercle,' which is merely a different spelling of the same word. Other synonyms for 'tubercule' include 'knob,' 'nodule,' 'protuberance,' 'bump,' and 'papule.' Use of these terms is largely dependent on the context in which they are used, and medical professionals may use different terms depending on the specific location or cause of the lump or swelling.