Breton lemmas, categorized by their part of speech.

• Category:Breton adjectives: Breton terms that give attributes to nouns, extending their definitions.
• Category:Breton adverbs: Breton terms that modify clauses, sentences and phrases directly.
• Category:Breton conjunctions: Breton terms that connect words, phrases or clauses together.
• Category:Breton determiners: Breton terms that narrow down, within the conversational context, the referent of the following noun.
• Category:Breton interjections: Breton terms that express emotions, sounds, etc. as exclamations.
• Category:Breton morphemes: Breton word-elements used to form full words.
• Category:Breton multiword terms: Breton lemmas that are a combination of multiple words, including idiomatic combinations.
• Category:Breton nouns: Breton terms that indicate people, beings, things, places, phenomena, qualities or ideas.
• Category:Breton numerals: Breton terms that quantify nouns.
• Category:Breton particles: Breton terms that do not belong to any of the inflected grammatical word classes, often lacking their own grammatical functions and forming other parts of speech or expressing the relationship between clauses.
• Category:Breton phrases: Breton groups of words elaborated to express ideas, not necessarily phrases in the grammatical sense.
• Category:Breton prepositions: Breton adpositions that are placed before their objects.
• Category:Breton pronouns: Breton terms that refer to and substitute nouns.
• Category:Breton verbs: Breton terms that indicate actions, occurrences or states.