General entry:
* Enter: This is the most general verb for entering a place or joining something.
* Go in: This is a more informal way of saying "enter."
* Come in: This is used when the speaker is inviting someone to enter.
Specific types of entry:
* Walk in: Used when entering on foot.
* Run in: Used for entering quickly or hurriedly.
* Crawl in: Used for entering a small space by crawling.
* Climb in: Used for entering something by climbing.
* Slide in: Used for entering something by sliding.
* Break in: Used for entering forcefully or illegally.
* Sneak in: Used for entering secretly or quietly.
* Dive in: Used for entering water.
* Leap in: Used for entering something with a jump.
More metaphorical uses:
* Join: Used for entering a group, organization, or activity.
* Enter into: Used for beginning a new phase or situation.
* Embark on: Used for starting a journey or undertaking.
* Engage in: Used for becoming involved in something.
The best verb to use will depend on the specific context.