instant message

noun 0.925

instant messenger

noun 0.916

text messaging

noun 0.679

messaging

noun 0.623

short message service

noun 0.612

chatting

noun 0.601

text message

noun 0.584

chat room

noun 0.568

group chat

noun 0.552

texting

noun 0.547

aim

noun 0.546

chat

noun 0.538

private message

noun 0.536

electronic mail

noun 0.528

messenger

noun 0.525

instant

noun 0.524

ism

noun 0.520

intercom

noun 0.518

video conference

noun 0.516

electronic communication

noun 0.511

message unit

noun 0.507

immediate mode

noun 0.503

interactive

noun 0.502