Common
| ORB
| Architecture
| common | |
| abbr. slang | common sense |
| mil. abbr. | com; comm; comn |
| ORB | |
| abbr. | Outreach Red Bank |
| abbr. inet. | Online Reference Book; Online Resource Bank; Operating Resident Browser |
| abbr. IT | Object Request Broker; Office Repeater Bay |
| abbr. media. | Opinion Research Business |
| abbr. mil. | Offworld Resource Base |
| abbr. scottish | Omni-directional Radio Beacon |
| abbr. st.exch. | Orbital Sciences Corporation |
| architecture | |
| abbr. | arch |
| |||
| common sense | |||
| com; comm; comn | |||
| |||
c'mon (misconception of the words "come on," it should be "c'mon"  urbandictionary.com Shabe) | |||
|
Common : 23 phrases in 7 subjects |
| Abbreviation | 13 |
| Aviation | 2 |
| Education | 1 |
| Information technology | 2 |
| Medical | 1 |
| Military | 3 |
| Telecommunications | 1 |