Oba ma ọ bụ OBA nwere ike na-arutu ihe ndị a aka: Oba (eze), aha ndi Bini na Yoruba na-akpọ ụfọdụ ndị eze ha Oba (orisha), mmụọ a ma ama n'okpukpe ọdịnala Africa dị iche iche na okpukpe Afro-America. Oba, aha nna Japan Oba: Samurai Ikpeazụ, ihe nkiri Japanese nke 2011 Oba Chandler (1946 – 2011), onye America n'egbu mmadụ, e gburu na 2011 Office Business Applications, ngwa ọrụ nke na-eji ngwa n'ime sistemụ Microsoft Office Oklahoma Bible Academy, ụlọ akwụkwọ sekọndrị nke Ndị Kraịst na Enid, Oklahoma, US Oklahoma Bankers Association, otu azụmaahịa na Oklahoma, US Oklahoma Bar Association, otu ndi ọka iwu steeti (òtù iwu) nke Oklahoma, US On Base Average, ọnụ ọgụgụ baseball Otu Bermuda Alliance, otu ndọrọ ndọrọ ọchịchị Bermuda Naanị ụmụ nwoke na-ada ụda, ndị Welsh nwoke olu ukwe Openbare Bibliotheek Amsterdam, ọbá akwụkwọ ọha nke Amsterdam Optical Brightening Agent, ụdị ihe eji esiji ákwà na akwụkwọ Out of Bound Agreement, na nkwukọrịta Output-based Aid, ụdị enyemaka iji kwado nnyefe nke ọrụ ọha na eze na mba ndị ka na-emepe emepe Oxygen Breathing Apparatus, sistemu ikuku oxygen nke ndị agha mmiri US na-eji maka mgbanyụ ọkụ Online Behavioural Advertising, teknụzụ na usoro dị iche iche nke ndị na-ebipụta weebụsaịtị na ndị mgbasa ozi na-eji.