Discipline is a type of System. Theology is a type of Discipline. Theological is derived from Theology. 
Calm is a type of Comfort. you are likely to find Comfort in/at/on Home. Home is related to Mom. 
System <--IsA-- Discipline <--IsA-- Theology <--DerivedFrom-- Theological 
Calm --IsA--> Comfort --AtLocation--> Home <--RelatedTo--> Mom 