carbon
Noun : I've never seen coal
tar
noun : once I was digging I found a bone
crab
Noun : I've never seen a crab
mineral
noun : I have seen minerals such as diamond gold or iron
cast
noun : I once throw a baseball
fish
Noun : I fished in a lake and did well
footprint
noun I have seen dog tracks
sediment
noun : I've always seen sediment
sponge
Noun : I saw the bob sponga series but never seen a real sponga
dinosaur
Noun : I don't know if dinosaurs are real or myths
mud
noun : I've played in the mud
imprsion
noun : I once use printing