interlope vs step in

interlope and step in both are verbs.

Word	Noun	Adjective	Verb	Adverb
interlope	No	No	Yes	No
step in	No	No	Yes	No

As verbs, step in is a hypernym of interlope; that is, step in is a word with a broader meaning than interlope:

interlope: encroach on the rights of others, as in trading without a proper license
step in: get involved, so as to alter or hinder an action, or through force or threat of force

Other hypernyms of interlope include interfere, interpose, intervene.

interlope (verb)	step in (verb)
encroach on the rights of others, as in trading without a proper license	get involved, so as to alter or hinder an action, or through force or threat of force
	act as a substitute