The zodiac circle has twelve signs. The circle begins with Aries and concludes with Pisces. Each sign has traits that set it apart from the others. It's important to learn key words describing each of the signs.  Here are some of key words and phrases that I like to use:

Aries

Aries is energetic, innovative, original, pioneering, assertive, quick-tempered, strong drive, leader, ambitious, extroverted, sometimes aggressive, competitive, enthusiastic, self-reliant, and self-assured.

Taurus

Taurus is determined, efficient, stubborn, cautious, placid, persistent, enduring, introverted, conservative, conventional, materialistic, security conscious, stable, industrious, dependable, and one generally having significant financial ability.

Gemini

Gemini is flexible, versatile, restless, a jack-of-all-trades, lively, alert, quick-witted, literary, communicative, a good conversationalist, changeable, sociable, logical, ingenious, agile, dexterous, intellectual, and mentally ambitious.

Cancer

Cancer is introverted, reserved, emotional, sensitive, moody, sympathetic, security-conscious, prudent, retentive, domestic, maternal, protective, quiet, calm, imaginative, conscientious, and quite the traditionalist.

Leo

Leo is ambitious, a lover of limelight, speculative, extroverted, optimistic, honorable, dignified, confident, proud, exuberant, sunny, flamboyant, charismatic, dramatic, competitive, a leader and an organizer.

Virgo

Virgo is practical, responsible, sensible, logical, analytical, highly discriminating, a careful planner, precise and punctual, dedicated, perfectionist, critical, health conscious, and somewhat introverted.

Libra

Libra is idealistic, a peacemaker, diplomatic, refined, poised, gracious, kind, courteous, fair-minded, sociable, charming, artistically creative, affable, cooperative, extroverted, and usually somewhat indecisive.

Scorpio

Scorpio is intense, determined, powerful, strong-willed, forceful, bold, courageous, enduring, competitive, resourceful, researcher, an investigator, secretive, mysterious, penetrating, psychic, self-reliant, and somewhat introverted or closed.

Sagittarius

Sagittarius is idealistic, optimistic, freedom-loving, casual, friendly, buoyant, gregarious, enthusiastic, philosophical, studious, farseeing, direct, outspoken, honest, loyal, restless and loves travel.

Capricorn

Capricorn is ambitious (power, position, money), organizational, self-disciplined, rigid, thrifty, prudent, security-conscious, conservative, responsible, practical, persistent, political, business oriented, methodical.

Aquarius

Aquarius is individualistic, unconventional, progressive, unique, independent, humanitarian, altruistic, visionary, perceptive, intellectual, logical, ingenious, inventive, unpredictable, detached, friendly, and scientific.

Pisces

Pisces is receptive, supersensitive, impressionable, peace-loving, serious, sympathetic, charitable, compassionate, artistic, creative, dreamer, dedicated, imaginative, psychic, shy, introverted, spiritual, and reclusive.