Shade is the general dark area that is protected from the sun:
It's so hot out - let's sit in the shade.
We brought an umbrella to the beach so that we could have some shade.
A shadow is the "shape" of an object or person that blocks the light. You can only have "shade" from the sun, but you can have a "shadow" from the sun OR other types of light, such as electric lights or candlelight.
My dog is afraid of his own shadow.
A lunar eclipse occurs when the moon passes through the earth's shadow.
We can also use the word shadows to refer to a dark area in general:
He jumped out from the shadows of the basement and scared me half to death.
Neck Stretches: "When the neck flexors become flexible, progress from stretching the right and left sides simultaneously to stretching the opposite sides individually."
Method: Stand or sit upright. Place right hand on the forehead. Pull the head back and toward the right so that the head points toward the shoulder. Keep the head straight; do not lay the head down to either side.
Affected Body Part: Most-stretched muscle: Left sternocleidomastoid. Lesser-stretched muscles: Left longissimus capitis, left semispinalis capitis, left splenius capitis.