introduce (verb) — sense 2 To make (something or someone) known, such as by formal announcement or recommendation.
introduction (noun) — sense 2 A means, such as a personal letter, of presenting one person to another.
introduction (noun) — sense 3 An initial section of a book or article, which introduces the subject material.
investigation (noun) — sense 1 The act of investigating; the process of inquiring into or following up; research, especially patient or thorough inquiry or examination
investment (noun) — sense 2 A placement of capital in expectation of deriving income or profit from its use or appreciation.
involved (adj) — sense 2 Associated with others, be a participant or make someone be a participant (in a crime, process, etc.)
involve (verb) — sense 1 To have (something) as a component or a related part; to comprise, to include.
involve (verb) — sense 2 To have (something) as a component or a related part; to comprise, to include.: To include (something) as a logical or natural, or necessary…
involve (verb) — sense 3 To cause or engage (someone or something) to become connected or implicated, or to participate, in some activity or situation.
iron (noun) — sense 1 A common, inexpensive metal, silvery grey when untarnished, that rusts, is attracted by magnets, and is used in making steel: a chemical element…
iron (noun) — sense 3 A tool or appliance made of metal, which is heated and then used to transfer heat to something else; most often a thick piece of metal fitted with a…
iron (verb) — sense 6 To pass an iron over (clothing or some other item made of cloth) in order to remove creases.
island (noun) — sense 1 A contiguous area of land, smaller than a continent, totally surrounded by water.
island (noun) — sense 2 A contiguous area of land, smaller than a continent, partially surrounded by water; a peninsula; a half-island.
issue (noun) — sense 1 The action or an instance of flowing or coming out, an outflow: A movement of soldiers towards an enemy, a sortie.
issue (noun) — sense 2 The action or an instance of flowing or coming out, an outflow: The outflow of a bodily fluid, particularly (now rare) in abnormal amounts.
issue (noun) — sense 3 Someone or something that flows out or comes out: The bodily fluid drained through a natural or artificial issue.
is (verb) — sense 1 Used in phrases with existential there (also here and where) when the semantic subject is plural.