Tonga is a group of islands north of New Zealand. The capital of Tonga is Nukuʻalofa.
Vinegar is a liquid made from wine, in a process that turns the alcohol in the wine into acetic acid. Vinegar has a different flavour depending on what kind of wine was used to make it. Balsamic vinegar is very dark, rice wine vinegar is very light and apple cider vinegar is yellow.
Vinegar is used to make sauces like ketchup, to preserve fruits and vegetables by pickling, and to dress salads.
Yoga is a traditional mental and physical discipline originally from India. In modern times in the Western world, yoga usually takes the form of poses and stretches as a form of exercise, but traditionally was also an aid to meditation.