Final answer:
The word 'song' traditionally refers to music with vocals, which makes the original statement false. Instrumental music is the term used for pieces without vocals. Music's deep connection to language and emotion makes it a cultural universal.
Step-by-step explanation:
The statement that the word "song" refers to any piece of music, regardless of the presence of vocals, is false. Traditionally, a "song" is understood to be a piece of music that contains vocals, meaning it is sung, often with accompanying instruments. Alternatively, pieces of music without vocals are typically referred to as instrumentals or compositions. Researchers indicate that music and language are deeply connected and that music can foster a sense of unity within groups. The ability of music to convey emotions and cross societal barriers without the need for words makes it a cultural universal.