Achilles

In Greek mythology, Achilles was a Greek hero of the Trojan War and the central character and greatest warrior of Homer's Iliad. His mother was the immortal nymph Thetis, and his father, the mortal Peleus, was the king of the Myrmidons.

Agamemnon

In Greek mythology, Agamemnon was the son of King Atreus and Queen Aerope of Mycenae, the brother of Menelaus, the husband of Clytemnestra and the father of Iphigenia, Electra or Laodike, Orestes and Chrysothemis.Mythical legends make him the king of Mycenae or Argos, thought to be different names for the same area. When Helen, the wife of Menelaus, was taken to Troy by Paris, Agamemnon commanded the united Greek armed forces in the ensuing Trojan War.

Stanza

In poetry, a stanza is a grouped set of lines within a poem, usually set off from other stanzas by a blank line or indentation. Stanzas can have regular rhyme and metrical schemes, though stanzas are not strictly required to have either. There are many unique forms of stanzas. Some stanzaic forms are simple, such as four-line quatrains.

Samuel johnson

Samuel Johnson , often referred to as Dr. Johnson, was an English writer who made lasting contributions to English literature as a poet, essayist, moralist, literary critic, biographer, editor and lexicographer. Johnson was a devout Anglican and committed Tory, and is described by the Oxford Dictionary of National Biography as "arguably the most distinguished man of letters in English history".[1] He is also the subject of perhaps the most famous biography in English literature, namely The Life of Samuel Johnson by James Boswell.[2]

Diameter

In geometry, a diameter  of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.

Tuberculosis

Tuberculosis (TB)   is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). Tuberculosis generally affects the lungs, but can also affect other parts of the body. Most infections do not have symptoms; in which case it is known as latent tuberculosis. About 10% of latent infections progress to active disease which, if left untreated, kills about half of those infected. The classic symptoms of active TB are a chronic cough with blood-containing sputum, fever, night sweats, and weight loss.

Fire hydrant

A fire hydrant, also called fireplug, is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection.

Prefix

A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix un- is added to the word happy, it creates the word unhappy. Particularly in the study of languages, a prefix is also called a preformative, because it alters the form of the words to which it is affixed.