Intrude
Part of speech: verb
Definition: to enter without permission
Example sentence: At yoga you get some sense of spiritual space so that people don't intrude. You can go there and close your eyes and no one will talk to you. People are too worried about not fainting to bother with some bloke who was on the telly.
Trespass
Part of speech: noun
Definition: (1290) sinAny of various torts involving interference to another's enjoyment of his property, especially the act of being present on another's land without lawful excuse.
Part of speech: verb
Definition: To commit an offence; to sin.To offend against, to wrong (someone).To enter someone else's property illegally.