Putting a word in context or in a full sentence makes a lot of difference.
If we were talking and I simply say to you, "Spell the word "there", you would have no idea if what I had said was:
- Spell the word "there".
- Spell the word "their".
- Spell the word "they're".
If I said "Spell the third word of this sentence: That is their house", you would be able to work out that neither "there" nor "they're" is possible, so I must have said "their".
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.