The standby adverb always is used a few different ways. It can be applied to things that happen on every occasion or without exception (he always works on Saturday), to things that occur continuously or without interruption (there’s always some pollution in the air), or it can mean “forever,” as in, Will you always love me? The adverb invariably is a synonym for always when talking about things that happen every time, without exception. If the weather forecast is invariably wrong, then it is never accurate (and maybe it's time to find a new source for your weather info!). If an answer to a question is invariably “yes,” then it is affirmative every time the question is asked.

The adjective innumerable denotes a number that is beyond count or, more loosely, that is extremely difficult to count: the innumerable stars in the sky. A strong synonym for innumerable is myriad, which describes things of an indefinitely great number (such as stars of a summer night) or things that have innumerable phases, aspects, or variations (the myriad mind of Shakespeare, for instance). Fittingly, myriad takes myriad forms. That is, myriad functions as a noun as well as an adjective. You can say “a myriad of reasons” (noun), or “myriad reasons” (adjective). Both are correct, though the adjective form is more common.

Things that are described as grand make a big impression, whether for their impressive size or appearance (grand mountain scenery) or, moving from things to people, their majestic or dignified air (her manner is grand and regal). A synonym of grand, stately comes imbued with nobility and elegance, and so takes the grandness up a notch. Stately is defined as “majestic” or “imposing in magnificence or elegance,” as in the case of a stately home, or an abode that looks like it could belong to royalty. It’s also used less commonly to describe people that exude refinement, elegance, and decorum—sometimes to the point of seeming haughty, aloof, or overly formal.