106923
" Tea tree oil " , also known as " melaleuca oil " , is an essential oil with a fresh camphoraceous odor and a colour that ranges from pale yellow to nearly colourless and clear .
 essential oil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 essential oil