404
blackboard
broken
chalk
chalkboard
client
code
communication
computer
computing
concept
connection
connectivity
dead link
deleted
diplay
down
error
hand
hosting
http
information
internet
link
male
man
message
moved
non functional
not found
numbers
page
request
response
search
search engine
server
standard
status
technology
text
unable
unable to connect
url
web
website
widget
words
writing
www