On dois. Nous devons. Can someone differentiate?

Just curious what the nuance is between these two. Is 'nous devons' more formal, or is must/should implied? Thanks! PS-- J'ADORE ROCKET FRENCH, Merci, Claire et Paul! Ce cours fait d'apprendre beaucoup de plaisir.

Yes, 'nous devons' (or nous "anything") is more formal, and 'on' is used informally or in casual conversation.

Merci!

merci

Stefanie, I think in addition to above, there is also one more meaning. "on" means also "one - in the third person form". Let me see if I can find an Example: "On ne doit pas parler pendent le test!" " One must not talk during the test". Here it's not about formality. Anyway, this is what I believe it means too: Bonn chance :)