1. Pointing out something
   "that house over there" 
2. The other one from this
   "this one is green, that one is red"

1. Introduces a subordinate clause
   "It is clear that you're up to the job"

Encyclopedia: That

• untidily
• untidiness
• untidy
• untie
• untied
• untier
• until
• until now
• untilled
• untimbered
• untimeliness
• untimely
• untipped
• untired
• untiring
• untitled
• unto
• untoasted
• untold
• untoothed
• untouchable
• untouched
• untoughened
• untoward
• untraceable