SYN: Discourse, speech, language, dialect, idiom, [See IMPOST].
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KEY: Tool.
SYN: Utensil, implement, machine, instrument, dupe, cat's-paw, hireling, [See LANGUAGE].
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KEY: Top.
SYN: Apex, head, culmination, extreme, summit.
ANT: Foot, bottom, root, base tail.
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KEY: Topic.