Choosing the right word is often more complicated than translating, which often leads to issues of appropriacy. Translating without a clear understanding of vocabulary can lead to the use of words that are rare, obsolete, or belong to an inappropriate genre or register.
Adverbs of frequency describe how often things occur, or how often we do things. These can be used as part of a hedging strategy, to describe frequency without having to use exact numbers. Learning to use indefinite adverbs appropriately is something that can be developed through extensive reading and listening.