Chado - Japanese word for tea ceremony
Chakaiseki - the meal, or food portion of the ceremony
Hashiarai - first course:
Nimono - foods simmered in broth
Kosuimono- clear broth
Hassun - second course:
Uminomono - seafood
Yamanomono - mountain food (land)
Konomono - third course:
Omogashi - main sweet
Koicha - thick tea, made with matcha and served first
Usucha - thin tea, also made with matcha, but with more water. Served second.
Matcha - powdered green tea
Higashi - dry sweets, served at the end of the ceremony
Kama - kettle for heating the water
Futaoki - bamboo rest for kettle lid
Kensui - waste water bowl, for any water leftover when making tea
Kakemono - hanging scroll, to be admired by guests and chosen to represent the theme of the ceremony.
Mizusashi - jar for holding fresh water for tea
Chaire - container to hold tea
Shifuku - silk pouch to hold the chaire
Tana - stand for utensils
Chawan - bowl for actually making the tea
Chasen - whisk, used to whisk the matcha tea, which is served rather foamy
Chashaku - bamboo scoop for tea
Hishaku - bamboo water ladle
Each one of these items has a role in the ceremony. A complete ceremony will include all these mentioned stages, as well as all these tools. Shorter ceremonies may not. Part of the ritual of tea ceremony is the appreciation of the design and beauty of the utensils and decorations of the tea room.
I've just outlined the tool terminology here, you'll need to research further to learn how all of these items are used together throughout the ceremony.