striking vs occurrence

striking and occurrence both are nouns.

Word	Noun	Adjective	Verb	Adverb
striking	Yes	Yes	No	No
occurrence	Yes	No	No	No

As nouns, occurrence is a hypernym of striking; that is, occurrence is a word with a broader meaning than striking:

Other hypernyms of striking include happening, natural event, occurrent.

striking (noun)	occurrence (noun)
the act of contacting one thing with another	an event that happens
the physical coming together of two or more things	an instance of something occurring

striking (adjective)	occurrence (adjective)
having a quality that thrusts itself into attention
sensational in appearance or thrilling in effect