This is the 6452nd most frequent Russian word.
юмориста
Humorist; a person who creates or performs humor.
The word "юмористом" is in instrumental case, describing a role or profession as 'by a humorist'.
Этот фильм сделан известным юмористом.
This film was made by a famous humorist.
The word "юмориста" is in genitive case, showing ownership or association as 'this humorist's'.
Я хотел бы присутствовать на выступлении этого юмориста.
I would like to attend this humorist's performance.
The word "юморист" is in nominative case, serving as the subject of the sentence as 'the humorist'.