contraption: device shrink.
This contraption is used for working out in the field.
This polar bear is submerged under the water.
massive: enormous solid.
eerie: creepy weird.
This spider is very eerie looking.
roamed: wander travel.
The ants roamed around on the lea
obstacles: impediment barrier
This man fell in the mud when he was trying to reach his goal and get through one of many obstacles.
These earrings are very elegant.
complicated: complex intricate.
The construction work looked very complicated.