a rocket (a rocket engine)

a locket (chained ornament)

registration / a record or entry / (Internet) a subscription on a platform like YouTube

to register / to record an entry / (Internet) to subscribe on a platform like YouTube

thesis; dissertation; article

Los Angeles (a census-designated place in Willacy County, Texas, United States) / Los Angeles River (a river in California, United States) / Los Angeles (a large city in California, United States)

robotics

(mathematics) topology (study of geometric properties that are not changed by stretching etc.)

(film) a premiere; the first showing of a movie to a general audience

blind alley, cul-de-sac, impasse, dead-end, dead-end street