cosec vs trigonometric function

cosec and trigonometric function both are nouns.

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

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

cosec: ratio of the hypotenuse to the opposite side of a right-angled triangle
trigonometric 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 circular function.

cosec (noun)	trigonometric 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