As nouns the difference between let and tell

is that let is milk or let can be letter while tell is a reflexive, often habitual behavior, (especially) one occurring in a context that often features attempts at deception by persons under psychological stress (such as a poker game or police interrogation), that reveals information that the person exhibiting the behavior is attempting to withhold or tell can be (archaeology) a mound, originally in the middle east, over or consisting of the ruins of ancient settlements.

As a verb tell is

(lb) to count, reckon, or enumerate.

As nouns the difference between content and relief

is that content is that which is contained while relief is the removal of stress or discomfort.

As an adjective content

is satisfied; in a state of satisfaction.

As a verb content

is to give contentment or satisfaction; to satisfy; to gratify; to appease.

As nouns the difference between contentment and relief

is that contentment is the state or degree of being contented while relief is embossment (especially that on a map).

As nouns the difference between purgative and comfort

is that purgative is something, such as a substance or medicine, that purges; laxative while comfort is contentment, ease.

As an adjective purgative

is (capable of) purging.

As a verb comfort is

to relieve the distress or suffering of; to provide comfort to.

In transitive terms the difference between purge and comfort

is that purge is to clarify; to clear the dregs from (liquor) while comfort is to make comfortable.

As verbs the difference between purging and comforting

is that purging is while comforting is .

As nouns the difference between purging and comforting

is that purging is the act by which something is purged while comforting is the act of giving comfort.

As an adjective comforting is

giving comfort.

As an adjective relaxed

is having an easy-going mood or temperament.

As a verb relaxed

is (relax).

As a noun dependent is

.

As verbs the difference between contented and smug

is that contented is past tense of content while smug is to make smug, or spruce.

As adjectives the difference between contented and smug

is that contented is satisfied while smug is irritatingly pleased with oneself; self-satisfied.

As verbs the difference between contented and flattered

is that contented is (content) while flattered is (flatter).

As adjectives the difference between contented and flattered

is that contented is satisfied while flattered is in a positive mood because of a comment or action which causes one to feel proud of oneself.

As verbs the difference between glad and smug

is that glad is while smug is (obsolete|transitive) to make smug, or spruce.

As an adjective smug is

irritatingly pleased with oneself; self-satisfied.