Get Hold of, Get Ahold of, Get a Hold of – Differences in Usage

When describing people, stoic has a particularly heroic connotation. A stoic person really braves everything that man, nature, and God throws at him without complaint. Stolid, on the other hand, is not so: You might use it to describe someone who showcases a simple faithfulness, a "friend through thick and thin," but you might also use the word to describe someone who's plodding and utterly unadaptable to change.

Job, of the Book of Job, is stoic. Watson, of Sherlock Holmes, is stolid.

Once and nonce aren't similar enough to be interchangeable despite their both meaning "one time". They are also in different registers. Don't use nonce unless you want to sound pretentious. The most common uses of that word are in this snippet from Wikipedia:

"A nonce word is a word used only 'for the nonce'....An example of a nonce word in the works of Shakespeare is 'honorificabilitudinitatibus'."

Nonce word is a technical term, so it's not pretentious unless you know that your audience doesn't know it. For the nonce is easily replaceable with for the moment.