What's the difference between casque and cassowary?

Casque

Definition:

• (n.) A piece of defensive or ornamental armor (with or without a vizor) for the head and neck; a helmet.

Example Sentences:

• (1) Monosomy 4p is rare; cytogenetic diagnosis is difficult when it is not oriented by clinical signs such as severe hypotonia, profound encephalopathy and dysmorphism ("casque de guerrier grec").

Cassowary

Definition:

• (n.) A large bird, of the genus Casuarius, found in the east Indies. It is smaller and stouter than the ostrich. Its head is armed with a kind of helmet of horny substance, consisting of plates overlapping each other, and it has a group of long sharp spines on each wing which are used as defensive organs. It is a shy bird, and runs with great rapidity. Other species inhabit New Guinea, Australia, etc.

Example Sentences:

• (1) A double-wattled cassowary died following a clinical course of severe diarrhea, anorexia, and polydypsia.
• (2) A biochemical approach was used to study the evolution of ratite birds, i.e., the ostriches, rheas, cassowaries, emus, and kiwis.
• (3) And when not foraging for dung beetles or fending off irate cassowaries, she vowed to engage her fellow contestants in debate about iniquities of the 24-week abortion limit.