cosec vs circular function

cosec and circular function both are nouns.

Word	Noun	Adjective	Verb	Adverb
cosec	Yes	No	No	No
circular function	Yes	No	No	No

As nouns, circular function is a hypernym of cosec; that is, circular function is a word with a broader meaning than cosec:

cosec: ratio of the hypotenuse to the opposite side of a right-angled triangle
circular function: function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle

Other hypernyms of cosec include trigonometric function.

cosec (noun)	circular function (noun)
ratio of the hypotenuse to the opposite side of a right-angled triangle	function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle