Sentence:  An infant has "only" cries and <WSD>coos</WSD> with which to communicate distress and well-being. Adults have many more ways of expressing themselves. However, their expressions of "disease" and "ease" can be boiled down to sophisticated cries and <WSD>coos</WSD>. A call for help in whatever form is a cry. A sense of well-being however expressed is a <WSD>coo</WSD>. Healing in the context of cries and <WSD>coos</WSD> can be viewed as the process of resolving the cries and fostering the <WSD>coos</WSD>. 
Meaning of the word marked with <WSD> tags:  An expression of pleasure made by a person.