Kids learn song quickly.

Meaning: A group of young people are rapidly acquiring the knowledge of a song.

Choice of Words: Kids is a plural noun referring to young people. Learn is a verb describing the process of acquiring knowledge or skill. Song is a noun referring to a piece of music intended to be sung. Quickly is an adverb describing the speed at which the learning takes place.

Alternative Expressions

Youngsters acquire musical compositions expeditiously.

Meaning: This sentence also means that children are able to learn songs in a short amount of time, but it uses more formal language.

Choice of Words: Youngsters is a formal way to refer to children or young people. Acquire means to get or come into possession of something. Musical compositions is a formal way to refer to songs. Expeditiously means quickly or promptly.

The children can memorize the lyrics to a song in no time.

Meaning: This sentence means that children are able to learn the words to a song very quickly.

Choice of Words: The children refers to a group of young people. Can indicates that they are able to do something. Memorize means to learn something so that you can remember it later. Lyrics are the words to a song. In no time means very quickly.

Related Expressions