der Franzose
Frenchman
A man who comes from France or has French citizenship.
Mein Brieffreund ist ein Franzose und lebt in Lyon.
My pen pal is a Frenchman and lives in Lyon.

Frenchman / adjustable wrench
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Frenchman
A man who comes from France or has French citizenship.
Mein Brieffreund ist ein Franzose und lebt in Lyon.
My pen pal is a Frenchman and lives in Lyon.

The two meanings are easy to distinguish. If people are talking about persons, origin, or travel, it means the man from France. If the topic is tools, repairs, or a workshop, it means the wrench.
Der neue Kollege ist Franzose und kommt aus Paris.
The new colleague is French and comes from Paris.
As a term for a person, 'Franzose' (Frenchman) belongs to the n-declension. This means it gets the ending '-n' in the accusative, dative, and genitive singular. This is a common source of mistakes.
Ein Franzose hat das Restaurant eröffnet.
A Frenchman opened the restaurant.
The word belongs to a family: the country is 'Frankreich' (France), the female person is 'die Französin' (Frenchwoman), and the adjective is 'französisch' (French). The feminine form is not declined like the masculine form.
Meine Nachbarin ist Französin.
My neighbor is a Frenchwoman.
The term 'Franzose' (Frenchman) for a wrench is colloquial. In a specialist shop or manual, you would be more likely to use the technical term 'verstellbarer Schraubenschlüssel' (adjustable wrench).
Für die Reparatur brauchst du einen Franzosen.
You need an adjustable wrench for the repair.
French
'französisch' and 'der Franzose' are both connected to France, but they have different functions. 'französisch' is an adjective and describes, for example, language, food, culture, or things from France. 'der Franzose' is a noun and means a man from France. Learners may confuse the words because they look similar. Pay attention: with 'französisch' you describe something; with 'der Franzose' you name a person.

Der Franzose erklärt uns den Weg zum Bahnhof.
The Frenchman explains the way to the train station to us.
Wir lesen im Unterricht einen kurzen französischen Text.
In class, we are reading a short French text.