Lie/liar/lieing/lies
Lie - Telling a lie: Making a statement that is slightly altered/inaccurate to make it untrue.
Liar - Someone that has told a lie.
Lying - To continue making statements or...
We may speak a lie, but generally we tell one. That is because the verb tell ( which means "count") is used for tales ( "accounts") and stories. Why not just dont lie!