Synonyms of the word 
FIREWOOD → FUEL
firewood
- n. Wood intended to be burned, typically for heat.
fuel
- n. Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.
- n. Substance that provides nourishment for a living organism; food.
- n. (figuratively) Something that stimulates, encourages or maintains an action.
- v. To provide with fuel.
- v. To exacerbate, to cause to grow or become greater.
If you are interested in words, visit the following sites :
- wiktionary.org/firewood For complete definition of a word
- 1word.ws/firewood to play with words, suffixs, prefixs, etc.