CodyCross Answers for all levels and groups

Aussie tennis pro who won 11 singles Grand Slams.

Changeableness, flexibility.

Giant Indonesian volcano that erupted in 1883.

Manicure applications that use an LED light.

To line a room with wooden boards and panels.

Type of bond containing free-moving electrons.

The late actor Omar Sharif's nationality.

Michelle Obama's memoir.

Round toy of soft foam meant to be thrown inside.

Hot pepper variety, often green and stuffed.

Eight-legged creature, e.g. spider or scorpion.

Youth is wasted on them.

A value that will always be the same in all cases.

Nickname of Beethoven's Piano Sonata No. 15 in D.

Similarity.

Decorating of shop windows.