Near, close, and next are not synonyms. Why would we expect them to use the same construction to act as prepositions in the same way?
The movie theater is close.
The movie theater is near.
The movie theater is next. [distinctly different]
The movie theater is convenient. [subtly different]
The movie theater is close by. [two words, "by" unnecessary]
The movie theater is nearby. [one word, fine]
The movie theater is next by. [nonsensical]
The movie theater is convenient by. [nonsensical]
The movie theater is close to the freeway.
The movie theater is near the freeway.
The movie theater is next to the freeway.
The movie theater is convenient to the freeway. [subtly different]
These words cannot be used the same in all situations. That is enough in my mind, to adequately support the "avoid unnecessary words" concept, despite my normal preference for congruence in usage.
And what about adjacent, beside, alongside, against, proximate, a short distance [from]...
Some require "to" in the third usage, and some do not. Not all make sense in the first usage. There's no conformity here.
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It is better to have honor than a good reputation.
(Reputation is what other people think about you. Honor is what you know about yourself.)