Example of Compound Words With Simple Words

In the Castilian language, sometimes it is used words made up of other words.

These are used to state something with a single word composed of two or three words that, if used separately, would complicate or give a different idea than the one intended to give.
In the compound wordss is very irregular in the way they acquire the plural. In some of them, only the ending of the first element that composes them changes.
Examples of plural in compound words:
Any - any
Whoever — whoever
Compound words where the plural is formed only with the modification of the second element are more common. there are compound words that do not alter any of their elements to form the plural even if they are used in the singular and plural a the time.
Examples of plural of common words:
Deaf-mute — deaf-mute
Gaped — gaped
Our Father - Our Father
Bittersweet — bittersweet
Welcome — welcome
Hail Mary - Hail Mary
There are two stressed syllables in most compound words, since most are made up of well-defined elements. As in the words:

Bearded vulture (of broken bones and bones)
Radiotelephony (radio and telephone)
In compound words, only the last component is accentuated, only when it has to carry a spelling accent according to the spelling rules.
Examples of compound words:
Cold river
In addition
Seventeenth