The best replacement for sound is bay.

The best alternatives to sound are rated as following:
★★★★★  bay
★★★★★  valid
★★★★  noise
★★★  light
★★★  unsound
★★  surf
★★  speed of light
★★  altitude
★  silence
★  valid arguments
★  valid argument
★  sounds
★  fjord
★  honda sound
★  light waves
★  sound bar
★  music
★  audio card
  light faster
  leaf
  sound card
  7.1 surround sound
  toonup
  stereo
  audio
  digital sound
  light travel faster
  reflective sound
  optical
  strait
  healthy
  picture on tv
  analog sound
  light speed
  voice

Your alternative for sound is not listed? Suggest!
Speaking about sound, one probably shouldn't forget about hdmi.

Other search terms related to sound and their ratings are:
★★★★★ hdmi
★★★★ focus is just noise
★★★ hdmi mac
★★ arduino
★★ hdmi cable mac
★★ windows media player
★★ chromecast
★★ dvd
★★ airplay
★★ apple tv
★ vga cable
★ vga
★ dcc
★ rear speakers
★ s-video
★ logmein
★ blu ray
★ hdmi from computer to tv
★ airplay mirroring
★ video
★ quicktime
★ wireless rear speakers
★ hdmi cable
picture tv
hdmi connection
s video
youtube
subwoofer
media player
dvd player
You have in mind a companion for sound and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sound in all years. Click on graph for more.
sound
bay
valid