Cannot but should be carefully distinguished from can but, e. g., "I can but try" means "All I can do is try." "I cannot but try" means "I cannot help trying."
Can't seem should not be used for seem unable, e. g., "I can't seem to see it."
Childlike should be carefully distinguished from childish. Childish refers particularly to the weakness of the child.
Come should not be confused with Go. Come denotes motion toward the speaker; go motion from the speaker, "If you will come to see me, I will go to see you."
Common should be distinguished from mutual. Common means "shared in common." Mutual means "reciprocal" and can refer to but two persons or things. A common friend is a friend two or more friends have in common. Mutual friendship is the friendship of two persons for each other.
Compare to, liken to, compare with, means "measure by" or "point out similarities and differences."
Condign means "suitable" or "deserved," not necessarily severe.
Condone means "to forgive" or "nullify by word or act," not "make amends for."
Consider in the sense of regard as should not usually be followed by as, e. g., "I consider him a wise man," not "as a wise man."
Contemptible is used of an object of contempt and it should be distinguished from contemptuous which is used of what is directed at such an object, e. g., "He is a contemptible fellow." "I gave him a contemptuous look."