franc / frank 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. 👇
franc: (noun) the basic monetary unit in many countries; equal to 100 centimes.
frank: (noun) a member of the ancient Germanic peoples who spread from the Rhine into the Roman Empire in the 4th century. (noun) a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll. (verb) exempt by means of an official pass or letter, as from customs or other checks. (adjective) clearly manifest; evident.
franc: f·r·AE·ng·k
frank: f·r·AE·ng·k
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)