HET: Heterozygous, meaning an animal who carries the genetic trait, but does not express it. For example If you mate an albino male to a normal female, the offspring will appear normal, but carry the genes for albinism.
Tang: A orange, or tangerine colored gecko.
Jungle: A gecko with irregular markings on it's back and broken tail bands.
Normal: A "wild type" gecko, in other words how they would normally look in the wild before selective breeding.
Albino: Any animal that lacks melanin, or black pigment. In leopard geckos albinos range in color.
Patternless Albino: An albino leopard that has no markings. Patternless leopards have no spots, strips or obviously, patterns.
Hope this helps, and check out this web page, it should help you figure out some morphs.
www.leopard-gecko.net/morphs/
Good luck,
Tony