Other hyponyms of communication include
publication,
message,
contagion,
infection,
language,
linguistic communication,
written communication,
written language,
content,
message,
subject matter,
substance,
didacticism,
sign,
signal,
signaling,
signalling,
sign,
indicant,
indication,
visual communication,
display,
expressive style,
style,
paralanguage,
paralinguistic communication,
auditory communication,
phonation,
vocalisation,
vocalism,
vocalization,
voice,
vox,
anomalous communication,
psychic communication,
psychical communication,
voice,
document.