S: (n) motion, movement, move, motility (a change of position that does not entail a change of location) "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"
S: (n) change (the action of changing something) "the change of government had no impact on the economy"; "his change on abortion cost him the election"
S: (n) action (something done (usually as opposed to something said)) "there were stories of murders and other unnatural actions"
S: (n) ripple ((electronics) an oscillation of small amplitude imposed on top of a steady value)
S: (n) transient ((physics) a short-lived oscillation in a system caused by a sudden change of voltage or current or load)
S: (n) beat (a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations)
S: (n) resonance (a vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating system)
S: (n) air, aura, atmosphere (a distinctive but intangible quality surrounding a person or thing) "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
S: (n) quality (an essential and distinguishing attribute of something or someone) "the quality of mercy is not strained"--Shakespeare
S: (n) attribute (an abstraction belonging to or characteristic of an entity)