They don't mean the very same thing. Critical means nitpicking. Essential means necessary. However, some people do say that they are the similar as critical also means exacting.
The adjective immediate can mean current or instantaneous, and imply a necessary action. It could have the synonyms pressing, urgent, paramount, or critical. When an action is about to happen, immediate can have the synonyms imminent, impending, or oncoming. Immediate can also mean close-at-hand, with the synonyms adjacent, nearby, or proximate.
They can be. Eager in some circumstances suggests anxious, impatient, or enthusiastic. Excited may not mean eager to do something, but for having done something.
This is your answer (synonyms of necessary below)essential, indispensableincumbentneeded, needful, required, requisiteobligatory
They are synonyms.
Serious (mood or demeanor) has the synonyms grave, solemn, stern, somber, grim, staid, sober, unsmiling, or humorless. Serious (to a great degree) has the synonyms important, severe, critical, crucial, or essential.
vital, important, necessary, critical, crucial, key, indispensable
Some synonyms for pivotal are: Crucial Middle Essential Focal Vital central cardinal axial critical principal
requirement or congenital
Strong Synonyms: Critical, Mandatory Weak Synonym: Important
No
The Mission Essential Task List is also known as METL. The most critical aspect is for all to understand and know the essential tasks and critical tasks.
needed, necessary, required
decisive, critical, deciding, determining
Some synonyms of "imperious" are domineering, authoritative, commanding, and bossy.
crucial, significant, critical, influential, momentous, conclusive, fateful
Synonyms for the word "imperative" are commanding, mandatory, essential, masterful.
There are several listed synonyms for the word necessities. Some include cause, essential, demand, obligation, claim, imperative, and the word essence.