Common words:
* IP (Internet Protocol)
* Ipecac (a medicine)
* Ipswich (a town in England)
* Ipso facto (by the fact itself)
Less common words:
* Iphigenia (a figure in Greek mythology)
* Ipis (a genus of ants)
* Ipomea (a genus of flowering plants)
* Ippolito (a male given name)
* Ipo (an abbreviation for "Internet Protocol over")
Acronyms and technical terms:
* IP address
* IP network
* IP security
* IP telephony
* IP VPN
Let me know if you'd like to see more words or have a specific type of word in mind!