This is the 622nd most frequent Finnish word.
juho
"Juho" is a Finnish male given name, equivalent to "John" in English.
In this sentence, 'Juho' is a proper noun, functioning as the subject of the sentence, referring to a person named Juho.
Juho kirjoittaa kirjaa.
Juho is writing a book.
Here, 'Juho' is again a proper noun, referring to a person's name, and it is discussed in the context of its suitability with another noun.
Juho sopii hyvin uuden roolin nimiin.
Juho fits well with the names of the new role.
In this sentence, 'Juho' is used as a proper noun, identifying a specific person known by that name, with an additional descriptor (location) given.