r-controlled and e
r-controlled and i
r-controlled and u
r-controlled and o
r-controlled and a
100

a thing on which a bird alights or roosts, typically a branch or a horizontal rod or bar in a birdcage.

perch

100

a female child.

girl

100

a slow-moving reptile, enclosed in a scaly or leathery domed shell into which it can retract its head and thick legs.

turtle

100

an implement with two or more prongs used for lifting food to the mouth or holding it when cutting.

fork

100

a sheet of information in the form of a table, graph, or diagram.

chart

200

a flowerless plant which has feathery or leafy fronds and reproduces by spores released from the undersides of the fronds.

fern

200

feeling a need to drink.

thirsty

200

noisily release air from the stomach through the mouth; belch.

burp

200

a hard permanent outgrowth, often curved and pointed, found in pairs on the heads of cattle, sheep, goats, giraffes, etc. and consisting of a core of bone encased in keratinized skin.

horn

200

a long-bodied chiefly marine fish with a cartilaginous skeleton, a prominent dorsal fin, and toothlike scales.

shark

300

a microorganism, especially one which causes disease.

germ

300

spin quickly and lightly around, especially repeatedly.

twirl

300

a small, simple, single-story house or shelter.

yurt

300

a North American cereal plant that yields large grains, or kernels, set in rows on a cob. Its many varieties yield numerous products, highly valued for both human and livestock consumption.

corn

300

a small piece of ground used to grow vegetables, fruit, herbs, or flowers.

garden

400

a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.

battery

400

smile in an irritatingly smug, conceited, or silly way.

smirk

400

a machine or container in which butter is made by agitating milk or cream.

churn

400

the direction in which a compass needle normally points, toward the horizon on the left-hand side of a person facing east, or the part of the horizon lying in this direction.

north

400

a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

star

500

writing arranged with a metrical rhythm, typically having a rhyme.

verse

500

a substance, such as mud or dust, that soils someone or something.

dirt

500
the thick, fleshy, edible root of either of two plants of the mustard family, the white-fleshed Brassica rapa rapifera or the yellow-fleshed rutabaga.


turnip

500

strength or energy as an attribute of physical action or movement.

force

500

a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles.

heart