Musical dynamics control the volume of a song, and may be signified by words, symbols, or both. Arpeggiated chords are usually played from low to high, unless marked by a downward arrow.
Arpeggio: A squiggly vertical line in front of a chord means its notes are hit quickly in order, not simultaneously to create a harp-like effect.
A fermata is also called a hold or a bird’s eye.