Connection between the words Apollo, Apollyon, and Apologise

I’ve tried researching this topic before, in re Apollo, the Greek god son of Leto and Zeus and twin brother of Artemis, and its possible connection with the “angel of the bottomless pit” as referenced in Revelation 9:11.

Some sources seem to agree that there is some connection with the god apollo, if nothing more than an orthographic one, (pardon my Greek but,) Apollyon apparently means “destruction, or destructor”, if and to what extent, Apollo means the same thing, I still have not received a satisfactory answer. (The coincidence seems too strong to me to brush over completely).

Does anyone know what if anything, the Greek suffix (if it even is a suffix) -ion or -yon mean? My gut feeling is they are indeed related, but having nothing more than my “gut feeling” to go by, I have let this inquiry drop for now, up until a couple of days ago I came across this passage from Herodotus Book 1, chapter CXXXIX:

their names, which agree with the nature
of their persons and their nobility, all end in the
same letter, that which the Dorians call san, and the
lonians sigma ; you shall find, if you search, that not
some but all Persian names alike end in this letter.

and a little bit latter in chapter CXLI:

141. As soon as the Lydians had been subdued by
     the Persians, the lonians and Aeolians sent messengers to Cyrus, offering to be his subjects on the same
     terms as those which they had under Croesus,
     Having heard what they proposed, Cyrus told them
     a story. Once, he said, there was a flute-player who
     saw fishes in the sea and played upon his flute,
     thinking that so they would come out on to the land.
     Being disappointed of his hope, he took a net and
     gathered in and drew out a great multitude of the
     fishes; and seeing them leaping, “You had best,”
     said he, ” cease from your dancing now ; you would not
     come out and dance then, when I played to you.”
     The reason why Cyrus told the story to the lonians
     and Aeolians was that the lonians, who were ready to
     obey him when the victory was won, had before
     refused when he sent a message asking them to revolt
     from Croesus. So he answered them in his anger.

it should be noted, that in the translation I was reading it used the word apology instead of story

Does anyone know if the original greek uses apologia? or was that an interpolation of the translator?

It does seem to make sense, if you construe that an apology, if taken by its archaic meaning, “an argument in defence of a position”, acts like a destroyer of sorts, destroying the possibility of future alliances, and may fit in to other possible themes of culture shock when comparing customs and habits of the various Greek and Persian city states, especially in a context of an ambassador’s audience with a King and its expected protocols etc.

I am well aware that in many instances Greek mythology uses personifications (as well as their parthenon of gods), treated as gods, they are nevertheless called by a simple word like for example: the gods “Sleep”, and “Dischord”.

Please, Please, Please! Can someone (with a firm understanding of ancient Greek) tell me what exactly does the WORD Apollo actually mean?