Insert
Part of speech: verb
Definition: To put in between or into.
Part of speech: noun
Definition: An image inserted into text. A promotional leaflet inserted into a magazine or newspaper.
Example sentence: When I see somebody being mistreated, my eyes tear up and I want to stop it. And I believe that the best thing I can do is to write about it, because if I insert myself into the equation it doesn't really do much good, but if I write about it I think it could do more good.
Enter
Part of speech: noun
Definition: The "Enter" key on a computer keyboard.A stroke on that key.
Part of speech: verb
Definition: To go into (a room, etc.)To type (something) into a computer; to input
Example sentence: Your life is like a play with several acts. Some of the characters who enter have short roles to play, others, much larger. Some are villains and others are good guys. But all of them are necessary; otherwise, they wouldn't be in the play. Embrace them all, and move on to the next act.