Rare vs. Seldom

Rareadjective

Very uncommon; scarce.

‘Black pearls are very rare and therefore very valuable.’;

Seldomadverb

Infrequently, rarely.

‘They seldom come here now.’;

Rareadjective

(of a gas) Thin; of low density.

Seldomadjective

(archaic) rare; infrequent

Rareadjective

Cooked very lightly, so the meat is still red (in the case of steak or beef in the general sense).

‘well done’;

Seldomadverb

Rarely; not often; not frequently.

‘Wisdom and youth are seldom joined in one.’;

Rareadjective

(obsolete) early

Seldomadjective

Rare; infrequent.

Rareverb

To rear, rise up, start backwards.

Seldomadverb

not often;

‘we rarely met’;

Rareverb

To rear, bring up, raise.

Rareadjective

Early.

‘Rude mechanicals that rare and lateWork in the market place.’;

Rareadjective

Nearly raw; partially cooked; not thoroughly cooked; underdone; as, rare beef or mutton.

‘New-laid eggs, which Baucis' busy careTurned by a gentle fire, and roasted rare.’;

Rareadjective

Not frequent; seldom met with or occurring; unusual; as, a rare event.

Rareadjective

Of an uncommon nature; unusually excellent; valuable to a degree seldom found.

‘Rare work, all filled with terror and delight.’; ‘Above the rest I judge one beauty rare.’;

Rareadjective

Thinly scattered; dispersed.

‘Those rare and solitary, these in flocks.’;

Rareadjective

Characterized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations.

‘Water is nineteen times lighter, and by consequence nineteen times rarer, than gold.’; ‘A perfect union of wit and judgment is one of the rarest things in the world.’; ‘When any particular piece of money grew very scarce, it was often recoined by a succeeding emperor.’;

Rareadjective

not widely known; especially valued for its uncommonness;

‘a rare word’; ‘rare books’;

Rareadjective

recurring only at long intervals;

‘a rare appearance’; ‘total eclipses are rare events’;

Rareadjective

not widely distributed;

‘rare herbs’; ‘rare patches of gree in the desert’;

Rareadjective

marked by an uncommon quality; especially superlative or extreme of its kind;

‘what is so rare as a day in June’; ‘a rare skill’; ‘an uncommon sense of humor’; ‘she was kind to an uncommon degree’;

Rareadjective

having low density;

‘rare gasses’; ‘lightheaded from the rarefied mountain air’;

Rareadjective

(of meat) cooked a short time; still red inside;

‘rare roast beef’;