Term: bus: a car that is old and unreliable
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: synovia: viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc.
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: submission: something (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: matriarch: a feisty older woman with a big bosom (as drawn in cartoons)
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: murine typhus: acute infection caused by rickettsia and transmitted by the bite of an infected flea; characterized by fever and chills and muscle aches and a rash
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: white camas: plant of eastern and central North America having creamy white flowers tinged with brown or purple; poisonous especially to grazing animals
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: kite balloon: a barrage balloon with lobes at one end that keep it headed into the wind
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: effortfulness: the quality of requiring deliberate effort
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: infection: moral corruption or contamination
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: plane: (mathematics) an unbounded two-dimensional shape
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: regular: a regular patron