Term: piggyback: the act of carrying something piggyback
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: electromagnetic radiation: radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: king's spear: asphodel with leafy stem and fragrant yellow flowers
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: pearlite: a lamellar mixture of cementite and ferrite formed during the cooling of austenite; a constituent of steel and cast iron
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: prostaglandin: a potent substance that acts like a hormone and is found in many bodily tissues (and especially in semen); produced in response to trauma and may affect blood pressure and metabolism and smooth muscle activity
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: simian: an ape or monkey
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: lassa virus: the RNA virus that causes Lassa fever
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: resistance unit: the reciprocal of conductance
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: paleopathology: the study of disease of former times (as inferred from fossil evidence)
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: hangar queen: an airplane with a bad maintenance record
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: property line: the boundary line between two pieces of property