inside; within; inner; internal; specifically refers to the interior or domestic domain as opposed to the exterior or foreign domain; often used in spatial or temporal contexts

(bound form) line of business; trade; profession; commercial firm; seniority among siblings; expertise in a certain field; skill acquired through practice

inside; within; inner; internal; specifically refers to the interior or domestic domain as opposed to the exterior or foreign domain; often used in spatial or temporal contexts

behavior; conduct; (bound form) one's actions