Difference between Until Now and Yet

UNTIL NOW vs YET: NOUN

A metal pan or boiler; yetling.
A West African volute of the genus Cymbium; a boat-shell. See cut under Cymbium.
Any one of several species of large marine gastropods belonging to the genus Yetus, or Cymba; a boat shell.
A metal pan or boiler. See yetling, 2.

Used in negative statement to describe a situation that has existed up to this point or up to the present time

Up to the present time
To a greater degree or extent; used with comparisons
Used after a superlative
Within an indefinite time or at an unspecified future time
Despite anything to the contrary (usually following a concession)
Used in negative statement to describe a situation that has existed up to this point or up to the present time
At this time; for the present.
Up to a specified time; thus far.
At a future time; eventually.
Besides; in addition.
Still more; even.
Nevertheless.
In addition; further; besides; over and above; still.
At the same time; by continuance from a former state; still.
Before some future time; before the end; eventually; in time.
Even; -- used emphatically.
Thus far; up to the present; up to some specified time.
Even.
In addition.
At some future time; eventually.
Continuously up to a certain time; still.

At or in the present time or juncture; before something else; at present; now: as, shall the deed be done yet? is it time yet?
In addition; over and above; in repetition; further; besides; still; even: used especially with comparatives.
Still, in continuance of a former state; at this or at that time, as formerly; now or then, as at a previous period.
At or before some future time; before all is done.
Up to the present time; thus far; hitherto; already: usually with a negative.
Yet is often accompanied by as in this sense: as, I have not met him as yet.
Though the case be such; at least; at any rate.
Yet is sometimes used with adjectives or participles (with or without a hyphen) to denote continuance of the action or state, or as equivalent to still.
Nevertheless; notwithstanding.
Though.
But.
To melt; found; cast, as metal.
Used with comparisons
To a greater degree or extent
(idiom) (as yet) Up to the present time; up to now.

On purpose, Speak for, Speak to, All along, Young man, And how, But then, Up to now, Til now, As yet, Yet, Hitherto, Heretofore, So far, Thus far

Sooner or later, Thus far, All the same, Until now, Withal, So far, Notwithstanding, Eventually, Hitherto, Heretofore, Nevertheless, Even, However, Nonetheless, Still

Call on, With that, Take to, End up, Cope with, Early on, Fall for, Talk about, On purpose, Speak to, And how, As yet, Yet, Hitherto, Heretofore

But, Already, Not, In time, Even so, As yet, Withal, Notwithstanding, Eventually, Hitherto, Heretofore, Even, However, Nonetheless, Still

From ancient Greek times until now, this message has survived, and we now bring it to you in our Molon Labe Spartan Helm stencil.
Toyota are now unquestioned, Poppendieck provides a more solid foundation and gives greater credibility to agile methodologies that have until now remained controversial.
Until now my customers have been Australian, but I now have a potential client back home in USA.
Until now, local clinics have had to wait until the week prior to find out how many doses the state would send.
African republics, asserting that until now up to now, thirteen thousand men have landed in provincial ports.
Until now, the state has refused to do this until an apostasy order is granted from the Sharia court.
Now, um, Up until now we have dealt with two things that are very controversial.
However, whereas Concerta revenues have until now only been a possibility, now they are guaranteed.
Everything until now has been introduction; now comes the essential message.
Tagle until now Bishop of Imus, now transferre.

Do you have a college supply list, yet?
There is no description for this business yet.
Average mortgage rates edged higher yet again yesterday.
Yet it does not provide benefits for workers.
Marie loves the beach, yet she hates sand.
CLOAs have yet to be awarded and farmers have yet to occupy such lands.
Statements have not yet heen accepted by Parliament, the Act of Settlement has not yet been repealed.
Yet other sorrows are simply unfathomable and only point us to the glory yet to be revealed.
Experience: No experience yet, since I still have yet to land my internship.
This simple yet powerful testimonial plugin is yet another promising solution to showcase experiences of your existing clients.