Here are some examples which I hope will help:
Retourner: to go back (not home)
Je voudrais
retourner en Thaïlande I would like to go back to Thailand.
L'année dernière, je suis retournée en Grèce, c'était super! J'ai revu mes amis grecs.
Last year, I went back to Greece, it was great! I saw my Greek friends again.
Revenir : to come back (come home)
Je reviens à Londres mardi I'm coming back to London on Tuesday.
A quelle heure tu reviens ce soir? What time will be be home tonight?
Quand est-ce que
tu reviendras ? When will you be back?
Quand est-ce que tu es revenu? When did you come back?
