spoor / spore [spɔr]
spoor – n. & v. – n. – 1. a trail of a person or animal, esp. of wild animals pursued as game; 2. vehicle tracks; 3. an implement used in ballasting; v. – follow or track game
spore – n. – 1. Botany one of the minute reproductive bodies characteristic of flowerless plants; 2. Zoology and Biology a very minute germ or organism