loudspeaker box
acoustic device; unit of one or several speakers and the housing (may even contain an amplifier or not)
computer speaker
loudspeaker with box or a set of such used as an external computer peripheral; usually includes an amplifier
Amazon Echo
brand of affordable, wireless smart speakers from Amazon which serve as man-machine-interface for the virtual digital speech assistant Alexa and for music listening
wireless speaker
loudspeaker box that receives audio signals using radio waves
smart speaker
speaker with features or services that go beyond audio playback
powered speaker
HiFi loudspeaker box that has at least one, typically two or more, built-in amplifiers