The difference between Dense and Few and far between

When used as adjectives, dense means having relatively high density, whereas few and far between means rare and scarce.

Dense is also noun with the meaning: a thicket.

check bellow for the other definitions of Dense and Few and far between

Dense as an adjective:

Having relatively high density.

Examples:

"synonyms: solid"
Dense as an adjective:

Compact; crowded together.

Examples:

"synonyms: compact crowded packed Thesaurus:compact"

"ant diffuse Thesaurus:diffuse"
Dense as an adjective:

Thick; difficult to penetrate.

Examples:

"synonyms: thick solid"

"ant thin"
Dense as an adjective:

Opaque; allowing little light to pass through.

Examples:

"synonyms: cloudy opaque Thesaurus:opaque"

"ant clear diaphanous see-through translucent transparent Thesaurus:transparent Thesaurus:translucent"
Dense as an adjective:

Obscure, or difficult to understand.

Examples:

"synonyms: abstruse difficult hard incomprehensible obscure tough Thesaurus:incomprehensible"

"ant clear comprehensible easy simple straightforward understandable Thesaurus:comprehensible"
Dense as an adjective (mathematics, topology):

Being a subset of a topological space that approximates the space well. See Wikipedia article on s for mathematical definition.

Examples:

"ant meager"
Dense as an adjective:

Slow to comprehend; of low intelligence.

Examples:

"synonyms: dumb slow stupid thick Thesaurus:stupid"

"ant bright canny intelligent quick quick-witted smart Thesaurus:intelligent"

Few and far between as an adjective (idiomatic):

Rare and scarce; hard to find.