The word as well as means "in addition to" while the word beside means "to compare with". So the have different meaning.
synonyms
Well, cavern...
Being a preposition, beside has no plural form. The word besides, meaning "also," is not a plural form, but rather an adverbial genitive.
A word that has the same meaning as another word is a synonym.
It is a native American word meaning 'beside the long tidal river' Original spelling Quinnehtukqut
The word in the passage with the same meaning as instantly is "immediately."
The "para" in "paragraph" comes from the Greek word "para," which means "beside." In a paragraph, several sentences are grouped together to discuss a specific idea or topic, appearing beside each other within the same block of text.
Some words that contain the root word "onym" are synonym (meaning a word with a similar meaning), antonym (meaning a word with the opposite meaning), and homonym (meaning a word that sounds the same but has a different meaning).
The word "experience" shares the same root as "experiment." Both words are derived from the Latin word "experiri," meaning "to try."
The word that has the same meaning as "opened by force" is "pry."
There is an old Latin word Patero meaning an enclosed terrace beside a building. The more modern derivation is from Spanish, meaning a courtyard.
Well one is to make uniform, but as far as I know, there is not an actual verb meaning to make the same.