A semantic field refers to a group of words that share the same phonetic origin, regardless of whether their meanings are related to a specific topic like "medicine" or "sports".

False cognates (false friends) are words that share a similar spelling and the same semantic meaning in two languages, facilitating the direct translation process for beginners.

Homonyms are words that have exactly the same meaning in all contexts but are spelled differently, acting as perfect synonyms to increase the stylistic variety of a text.

Collocations are conventional word combinations that sound natural to native speakers, such as "make a mistake" or "do homework", where substituting a synonym would sound idiomatically awkward.