Ki/chi/qi is the same word in Chinese. The variations come from the fact that we Americans and our English language have so many ways to spell or express the same sounds.
Edit: Chakras are a Hindu and Buddhist concept of energy points on the body. There are major chakras and minor ones. The minor ones are located near pressure points all over the body. Chinese medicine uses a lot of the minor ones. The 7 major chakras are indeed located from the base of the spine (tailbone) to the very top of your skull. These correspond to different emotions or aspects of life, and have corresponding colors and minerals that react with them (crystal therapy). They are as follows:
1. Root chakra, or Muladhara
Located: Between reproductive organs and tailbone.
Color: light red, indian red, coral red, brown, and black.
Governs: The "base" or primal emotions, instinct, security, fear, stability.
Gemstone: black tourmaline, garnet, obsidian, black onyx, dark ruby, smokey quartz, bloodstone.
Likes: earthy, musky, or woody scents such as cedarwood
2. Sacral chakra, or Swadhishthana
Located in: Tailbone, base of spinal chord.
Color: orange-red
Governs: Sexual energy, reproductive health, reproduction, pleasure, problems with wanton hedonism or problems with intimacy or pleasure.
Gemstone: Carnelian, Yellow/Golden Topaz, Tiger Eye, Orange Amber, Sunstone, Peach Aventurine, Malachite.
Likes: fiery or musky scents
3. Navel or solar plexus chakra, or Manipura.
Located: Solar plexus, or midway between navel and lower chest.
Color: yellow
Governs: Digestive health, willpower or lack thereof, power issues, ambition.
Gemstone: Yellow Amber, Citrine, Golden Topaz, Yellow Calcite, Yellow Aragonite, Golden Tiger Eye.
Likes: citrus scents like lemon
4. Heart chakra or Anhata.
Located: Center of the chest.
Color: Green, pink
Governs: love, respect, empathy, emotion, compassion, cardiovascular (heart) and respiratory (lungs) health, being judgmental or emotionally "needy".
Gemstone: Green Aventurine, Rose Quartz, Malachite, Jade, Rhodochrosite, Pink Kunzite, Rhodonite, Pink Opal, Lepidolite, Fluorite, Garnet of any color.
Likes: flower-musk scents like ylang-ylang, jasmine, or rose.
5. Throat chakra or Vishuddha
Location: throat, thyroid
Color: light blue, turquoise, teal/cyan, pure blues
Governs: communication, creativity, vocation, integrity, diplomacy, thyroid problems, nose problems, hearing or dental health.
Gemstones: Blue Lace Agate, Angelite, Blue Topaz, Blue Kyanite, Blue Chalcedony, Blue Calcite, Sapphire, Blue Opal, Aquamarine.
Likes: Clean scents like rain or fresh air, even clary sage.
6. Third eye chakra or Ajna
Located: brow or center of forehead.
Color: indigo, violet
Governs: extra-sensory perception, zealotry, intuition, inspiration, imagination, spirituality, nightmares, migraines, mental health, pineal gland, disconnection with reality, drug abuse.
Gemstones: Lapis Lazuli, Amethyst, Sodalite, Sugilite, Purple Fluorite, Dumortierite, Blue Aventurine, Charoite, Tanzanite, Dark Blue Kyanite, Moonstone, Fire Opal.
Likes: Scents like hyacinth or white musk
7. Crown chakra or Sahasrara-Padma.
Located: Top of skull or just above it.
Color: white, gold, or rich purples.
Governs: redemption, the divine, kharma, conscience, problems with attracting unsavory spirits or being completely ungrounded or locked in fantasy, delirium.
Gemstones: Clear Quartz, Amethyst, Selenite, Diamond of any color, Transparent stones, Opal.
Likes: scents like rosewood, geranium, violet.
Here's my sources, there are far more detailed descriptions there:
http://www.chakragemstones.com/http://en.wikipedia.org/wiki/Chakras 
Reply
