der Klub
club
An organization or association in which people with shared interests meet.
Sie ist Mitglied in einem Literaturklub, der sich einmal im Monat trifft.
She is a member of a literature club that meets once a month.

club
Loading your saved state.
club
An organization or association in which people with shared interests meet.
Sie ist Mitglied in einem Literaturklub, der sich einmal im Monat trifft.
She is a member of a literature club that meets once a month.

To distinguish the two meanings, pay attention to the verbs and the context. If it is about membership and shared interests ('beitreten' (to join), 'Sport' (sports)), it means an association or club. If it is about going out and music ('tanzen' (to dance), 'feiern' (to party)), it means a nightclub.
Er ist seit fünf Jahren Mitglied im Schachklub.
He has been a member of the chess club for five years.
When 'Klub' means an association or club, it is often used with verbs such as 'einem Klub beitreten' (to join a club), 'einen Klub gründen' (to found a club), or 'Mitglied in einem Klub sein' (to be a member of a club). The type of club is also often named, e.g. 'Sportklub' (sports club), 'Buchklub' (book club).
Wir wollen einen Fotoklub gründen, um unser Hobby zu teilen.
We want to start a photography club to share our hobby.
When a nightclub is meant, the sentence usually describes movement there or being there. Typical formulations are 'in den Klub gehen' (to go to the club), 'in einem Klub tanzen' (to dance in a club), or 'die ganze Nacht im Klub feiern' (to party all night at the club).
Wir haben bis vier Uhr morgens im Klub getanzt.
We danced at the club until four in the morning.
club / association
'der Verein' and 'der Klub' can both mean a group of people who meet because of a shared interest, for example in sports. In German, 'der Verein' often sounds more official and fits well when the focus is on membership, rules, and shared goals. 'der Klub' can also mean this kind of organization, but it often sounds more informal or modern. In addition, 'der Klub' can be a place for dancing and drinking. That is why the words can be confused: a 'Sportklub' (sports club) can be similar to a 'Verein', but a 'Nachtklub' (nightclub) is not a 'Verein'.

Mia sucht einen Klub, in dem sie regelmäßig Schach spielen kann.
Mia is looking for a club where she can play chess regularly.
Am Wochenende hat der Verein eine Wanderung für den nächsten Tag geplant.
At the weekend, the association planned a hike for the next day.