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Use "headwords" in a sentence
"Phrases follow each definition using headwords in standard contexts"
"Exemplary phrases using headwords in standard contexts"
"The access structure is provided at the macro-typographic level by the alphabetic sequence and page elements (alphabetic sections, headlines, headwords) which assist overall navigation and the location of entries, and at the micro-typographic level by the differentiation of elements (etymologies, cited forms, sense numbers) within an entry."