Typical sail wardrobe

Main sail - strong enough to cope with all wind strenght
Trisail - replaces main sail in very strong winds
Gennaker - used for sailing downwind, easy for handling
Spinnaker - sail used to add sail area when sailing downwind
Genoa - sail for light to moderate winds
Jib No1 - for sailing in moderate conditions
Jib No2 - used when the wind is too strong for working jib No1
Storm jib - used for sailing in very rough conditions