"abaq" is not a Hebrew word, but it's close to avak (אבק) which means "dust." It's not possible to know who or when any biblical Hebrew word was made. Some Modern Hebrew words can be traced to Eliezar ben-Yehuda in the late 19th Century.
These words are not Hebrew.
Eliezer Edwards has written: 'John Skirrow Wright, M.P' 'The Hen and Chickens Hotel, Birmingham' 'Words, facts, and phrases' -- subject- s -: Encyclopedias and dictionaries
Ruprecht has no meaning in Hebrew. Only words that come from Hebrew have meaning in Hebrew.
The Hebrew language uses a different alphabet, and there is no "A" in it. But if you mean Hebrew words that transliterate into words beginning with A, there are thousands, including:abbaAdonaiafikomanaggadaahavaakavalamaranaAraviasafataravayalaz
All words were invented, but no one really invented words.
Hebrew writing dates back at least 3600 years, but it was only written with consonants; the vowel marks were only invented 1000 years ago. Since they couldn't change the spelling of Hebrew words (Hebrew is considered holy), placing dots above and below the letters was the most practical way to do it.
See related links for an online dictionary where you can look up all the Hebrew words you want.
The Hebrew text of the book of Psalms contains 19,657 words.
The original Hebrew text of the Torah has 79,847 words. The KJV translation has 157,737 words. Keep in mind that many common words in English (such as "and" "the" "in") are only prefixes in Hebrew, and do not count as separate words. Also keep in mind that Hebrew does not have the following common words at all: "a" "an" "is" "are" "am"
Bialik is not known for coining Modern Hebrew words. He wrote his poems in Ashenazic Hebrew, which is not the dialect of Israel.
Here are a few examples of Hebrew words that start with Zayin׃ זה זאת זמן זרק זול זוז זעק זברה זכר