Voluntary is related to Conscious. Consciousness is derived from Conscious. Consciousness is a synonym of Awareness. Feel is a type of Awareness. 
Decline is a synonym of Pine. Pine is related to Forest. Forest is related to Smoke. Smoke is related to Alarm. 
Voluntary <--RelatedTo--> Conscious <--DerivedFrom-- Consciousness <--Synonym--> Awareness <--IsA-- Feel 
Decline <--Synonym--> Pine <--RelatedTo--> Forest <--RelatedTo--> Smoke <--RelatedTo--> Alarm 