Interwoven is an adjective. - verb is interweave It is not at all related to the other two. From Cambridge Dictionary https://dictionary.cambridge.org/us/dictionary/english/interweave to put together or combine two or more things so that they cannot be separated easily: sample sentence: The author skillfully interweaves fiction and history in her novel. Intervention and interference are nouns. respective verbs are :intervene and interfere Intervene --https://dictionary.cambridge.org/us/dictionary/english/intervene to become involved intentionally in a difficult situation in order to change it or improve it, or prevent it from getting worse: interfere -https://dictionary.cambridge.org/us/dictionary/english/interfere to involve yourself in matters connected with other people without being asked or needed: I suggest looking up words in a dictionary for English learners, either the Cambridge or the Longman. They will both give you easy-to-understand definitions and good sample sentences.