Clavus is a synonym of corn.
As nouns the difference between clavus and corn
is that clavus
is a callous growth, especially on the foot; a corn while corn
is (uncountable) a cereal plant grown for its grain, specifically the main such plant grown in a given region, such as oats in parts of scotland and ireland, wheat or barley in england and wales, and maize or sweetcorn in the americas or corn
can be a type of callus, usually on the feet or hands or corn
can be (us|canada) something (eg acting, humour, music, or writing) which is deemed old-fashioned or intended to induce emotion
can be (uncountable) short for corn snow
a type of granular snow formed by repeated melting and re-freezing, often in mountain spring conditions.
As a verb corn is
(us|canada) to granulate; to form a substance into grains.