noun

• (by extension, often figuratively) An act or instance of gaining control of or mastery over something, overcoming obstacles.
  "Mankind's conquest of space"
• (obsolete, feudal law) The acquiring of property by other means than by inheritance; acquisition.
  "What we call purchase, perquisitio, the feudists called conquest, conqucestus, or conquisitio"
• (colloquial, figurative) A person whose romantic affections one has gained, or with whom one has had sex, or the act of gaining another's romantic affections.
  "And, crowning glory of the evening! a conquest was made, a conquest so sudden, so brilliant, and so obvious, that it was enough to give any fête at which it occurred the immortality of a season."
• (video games) A competitive mode found in first-person shooter games in which competing teams (usually two) attempt to take over predetermined spawn points labeled by flags.

verb

• (marketing) To compete with an established competitor by placing advertisements for one's own products adjacent to editorial content relating to the competitor or by using terms and keywords for one's own products that are currently associated with the competitor.

verb

• (archaic) To conquer.