Sort the sixteen words into four categories. The four categories are joined by a common thread, with that being the solution.
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| HEAT TRANSFER | STOLEN BASE | BURNOUT | COMBAT TRAINING |
| BODY SPRAY | SWEAT | BISEXUAL | TOOTHPASTE |
| GETAWAY | AUTISTIC | CAT TOY | SIMPLE SYRUP |
| LIP BALM | INDIGO | HAT TRICK | MICROWAVE |