The difference between Just and Simply

When used as adverbs, just means only, simply, merely, whereas simply means in a simple way or state.

Just is also interjection with the meaning: expressing dismay or discontent.

Just is also noun with the meaning: a joust, tournament.

Just is also verb with the meaning: to joust, fight a tournament.

Just is also adjective with the meaning: factually right, correct.

check bellow for the other definitions of Just and Simply

Just as an adjective:

Factually right, correct; factual.

Examples:

"It is a just assessment of the facts."
Just as an adjective:

Rationally right, correct.
Just as an adjective:

Morally right; upright, righteous, equitable; fair.

Examples:

"It looks like a just solution at first glance."
Just as an adjective:

Proper, adequate.

Just as an adverb:

Only, simply, merely.

Examples:

"Plant just a few tomatoes, unless you can freeze or dry them."

"He calls it vermilion, but it's just red to me."
Just as an adverb (sentence adverb):

; simply.

Examples:

"'Just follow the directions on the box."
Just as an adverb (speech act):

Examples:

"I just called to say "hi"."
Just as an adverb (speech act):

.

Examples:

"Lord, we just want to thank You and praise Your Name."
Just as an adverb (degree):

absolutely, positively

Examples:

"It is just splendid!"
Just as an adverb:

Moments ago, recently.

Examples:

"They just left, but you may leave a message at the desk."
Just as an adverb:

By a narrow margin; closely; nearly.

Examples:

"The fastball just missed my head!"

"The piece just might fit."
Just as an adverb:

Exactly, precisely, perfectly.

Examples:

"He wants everything just right for the big day."

Just as a verb:

To joust, fight a tournament.

Examples:

"rfquotek Fairfax"

Simply as an adverb (manner):

In a simple way or state; considered in or by itself; without addition; alone.

Examples:

"ant complexly"
Simply as an adverb (manner):

Plainly; without art or subtlety

Examples:

"synonyms: clearly obviously unquestionably"
Simply as an adverb (manner):

Weakly; foolishly; stupidly.

Examples:

"rfquotek Johnson"
Simply as an adverb (focus):

Merely; solely.

Examples:

"synonyms: just Thesaurus:merely"

"I was simply asking a question."
Simply as an adverb (degree):

absolutely, positively.

Examples:

"That was a simply wonderful dessert."

"synonyms: very Thesaurus:very"
Simply as an adverb (speech act):

Frankly.

Examples:

"'Simply, he just fired you."

"synonyms: honestly Thesaurus:actually"