there (t̸her)
adverb

1. at or in that place: often used as an intensive [Mary there is a good player]: in dialectal or nonstandard use, often placed between a demonstrative pronoun and the noun it modifies [that there hog]
2. toward, to, or into that place; thither go there
3. at that point in action, speech, discussion, etc.; then there I paused
4. in that matter, respect, etc.; as to that there you are wrong
5. at the moment; right now there goes the whistle

Etymology: ME ther, there, where < OE ther, thær, there, where < IE *tor-, *ter-, there < *to-, *tā-, demonstrative base > that, then

noun
that place or point we left there at six

1. used to express defiance, dismay, satisfaction, etc. there, I've done it anyway!
2. used to express sympathy, concern, etc. when repeated there, there! everything will be OK

their Definition

their (t̸her)

of, belonging to, made by, or done by them: also used before some formal titles [Their Majesties]: often used in connection with a preceding singular pronoun (as everybody, somebody, everyone) did everybody finish their lunch?
Etymology: ME theyr < ON theirra, gen. pl. of the demonstrative pron. replacing ME here, OE hira: see they


to¹ Definition

to (to̵̅o̅)

1.  
   1. in the direction of; toward a turn to the left, traveling to Pittsburgh
   2. in the direction of and reaching he went to Boston; it fell to the ground
2. as far as; to the extent of wet to the skin, starved to death
3.  
   1. toward or into the condition of to grow to manhood, a rise to fame
   2. so as to result in sentenced to ten years in prison

too Definition

too (to̵̅o̅)
adverb

1. in addition; as well; besides; also
2. more than enough; superfluously; overly the hat is too big
3. to a regrettable extent that's too bad!
4. extremely; very it was just too delicious!

Etymology: stressed form of to, with differentiated

Their = people
there = place

to = action
too = descriptive