[*] 213. Adverbs, Prepositions, Conjunctions, and Interjections are called Particles. In their origin Adverbs, Prepositions, and Conjunctions are either (1) case-forms, actual or extinct, or (2) compounds and phrases. Particles cannot always be distinctly classified, for many adverbs are used also as prepositions and many as conjunctions (§§ 219 and 222).
[*] 213. Adverbs, Prepositions, Conjunctions, and Interjections are called Particles. In their origin Adverbs, Prepositions, and Conjunctions are either (1) case-forms, actual or extinct, or (2) compounds and phrases. Particles cannot always be distinctly classified, for many adverbs are used also as prepositions and many as conjunctions (§§ 219 and 222).