Discover is related to Channel. Channel is a synonym of Sound. Sound is related to Pitch. 
Freeze is a type of Interrupt. Interrupt is a synonym of Disturb. Disturb is a synonym of Confuse. 
Discover <--RelatedTo--> Channel <--Synonym--> Sound <--RelatedTo--> Pitch 
Freeze --IsA--> Interrupt <--Synonym--> Disturb <--Synonym--> Confuse 