solar matter is a mean of sound matter
sound is energy. sound_information_bearing_thing is audible_sound_or_sound_sequence. radio_commercial is sound_information_bearing_thing. character_string_token_sounded is sound_information_bearing_thing. quaver is sound. quaver is not sound. sound_frequency is not sensory_information. character_string_token_sounded is not sound_information_bearing_thing. spoken_utterance is sound_information_bearing_thing. sound_information_bearing_thing is not audible_sound_or_sound_sequence.