What is the difference between a third person limited narrator and a third person omniscient narrator

A third person limited narrator tells the story as something happening to one woman or one man, using mainly pronouns like he, she, it or using proper nouns ( Gasby, Mr. Bean, etc ). On the other hand, a third person omniscent narrator uses the same pronouns and also uses another perspective as the narrator were someone watching everything from above.

the dictionary definition of ubiquitous is "present, appearing, or found everywhere".