examples:
Rubicón
the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war
aries
the first sign of the zodiac which the sun enters at the vernal equinox; the sun is in this sign from about March 21 to April 19
tauro
the second sign of the zodiac; the sun is in this sign from about April 20 to May 20
géminis
the third sign of the zodiac; the sun is in this sign from about May 21 to June 20
cáncer
the fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22
leo
the fifth sign of the zodiac; the sun is in this sign from about July 23 to August 22
virgo
the sixth sign of the zodiac; the sun is in this sign from about August 23 to September 22
libra
the seventh sign of the zodiac; the sun is in this sign from about September 23 to October 22
escorpión
the eighth sign of the zodiac; the sun is in this sign from about October 23 to November 21
sagitario
the ninth sign of the zodiac; the sun is in this sign from about November 22 to December 21
capricornio
the tenth sign of the zodiac; the sun is in this sign from about December 22 to January 19
acuario
the eleventh sign of the zodiac; the sun is in this sign from about January 20 to February 18
piscis
the twelfth sign of the zodiac; the sun is in this sign from about February 19 to March 20
types:
atmósfera
the mass of air surrounding the Earth
zona
an area or region distinguished from adjacent parts by a distinctive feature or characteristic
condado
(United Kingdom) a region created by territorial division for the purpose of local government
extremo
the outermost or farthest region or point
interior
the region that is inside of something
ionosfera
the outer region of the Earth's atmosphere; contains a high concentration of free electrons
capa
a relatively thin sheetlike expanse or region lying over or under another
exterior
the region that is outside of something
radio
a circular region whose area is indicated by the length of its radius
lado
a place within a region identified relative to a center or reference location
aire
the region above the ground
zodiaco,
zodíaco
a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes
agujero negro
a region of space resulting from the collapse of a star; extremely high gravitational field
capitel
the upper part of a column that supports the entablature
espacio aéreo
the atmosphere above a nation that is deemed to be under its jurisdiction
pie
the lower part of anything
límite
the line or plane indicating the limit or extent of something
final
either extremity of something that has length
extremo
the point located farthest from the middle of something
entre
the location of something surrounded by other things
límite
as far as something can go
cabecera
space by the side of a bed (especially the bed of a sick or dying person)
estrato
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
exosfera
the outermost atmospheric layer
hidrosfera
the watery layer of the earth's surface; includes water vapor
litosfera
the solid part of the earth consisting of the crust and outer mantle
manto
the layer of the earth between the crust and the core
mesosfera
the atmospheric layer between the stratosphere and the thermosphere
estratosfera
the atmospheric layer between the troposphere and the mesosphere
termosfera
the atmospheric layer between the mesosphere and the exosphere
troposfera
the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude)
copa
the upper branches and leaves of a tree or other plant
nieve
a layer of snowflakes (white crystals of frozen water) covering the ground