I see the following words used incorrectly so many times here and in many other sites I visit. So here are the definitions:
your (adj.) Used as a modifier before a noun: your boots; your accomplishments.
you're Contraction of you are
their (adj.) Used as a modifier before a noun: their accomplishments; their home town
there (adv.) At or in that place: sit over there.
there (pron.) Used to introduce a clause or sentence: There are numerous items. There must be another exit.
there (adj.) Used especially for emphasis after the demonstrative pronoun that or those, or after a noun modified by the demonstrative adjective that or those: That person there ought to know the directions to town.
they're Contraction of they are
to (prep.) In a direction toward so as to reach: went to the city
too (adv.) In addition; also: He's coming along too.
too (adv.) More than enough; excessively: She worries too much
lose (v.) To be unsuccessful in retaining possession of; mislay: He's always losing his car keys
loose (adj.) Not fastened, restrained, or contained: loose bricks