Context: In chemical terms, the difference between hardwood and softwood is reflected in the composition of the constituent lignin. Hardwood lignin is primarily derived from sinapyl alcohol and coniferyl alcohol. Softwood lignin is mainly derived from coniferyl alcohol.

Question: What component of wood determines whether it is hardwood or softwood?
Answer: lignin

Question: Which wood has lignin that comes primarily from one type of alcohol?
Answer: Softwood

Question: Which type of alcohol mainly becomes softwood lignin?
Answer: coniferyl

Question: In addition to coniferyl alcohol, what other alcohol is in hardwood lignin?
Answer: sinapyl

Question: Which kind of wood contains lignin derived from two main alcohol sources?
Answer: Hardwood