What is the difference between 入 and 进? Both seems to mean "to enter".   I had a feeling that the  入 is more "to put into" while the 进 is "to enter" ? But I also saw the "entrence" using 入.
入 (to put into/ to enter into)
进 (to advance/ to advance and enter)

进入 (advance into/ to enter) is a compound word

进(advance) is the main verb

入(into) is the resultative/ directional verb particle