Income tax return and Legal instrument

Income tax return noun - Document giving the tax collector information about the taxpayer's tax liability.

Legal instrument and income tax return are semantically related. In some cases you can use "Legal instrument" instead a noun phrase "Income tax return".

Legal instrument noun - (law) a document that states some contractual relationship or grants some right.

Income tax return and legal instrument are semantically related. Sometimes you can replace phrase "Income tax return" with "Legal instrument", this phrases are similar.