All the words contained in the above list have their roots only in Tamil.

     In old Tamil, one of the modes of forming the preterite tense was to add the suffix ‘ƒ’ to the verbal theme, as it is now done in Hindi. In Mediaeval Tamil, it was restricted to the formation of preterite participles, and subsequently went out of use in the colloquial dialect and prose literature.

     The Tamil optative suffix ‘iya’ corresponds to the honorific imperative suffix ‘iye’ of Hindi, which is added to the verbal theme to form the polite form of the Imperative Mood.

     The Hindi Negative Imperative suffix ‘mat’ seems to be a corruption of the Telugu ‘vaddu’, and the origin of the Sanskrit prohibitive particle ‘mƒ’. In that case, it is to be traced back to the ™‡ras„ni Prƒkrit or some other earlier form of speech.

     ‘mƒŠu’ or ‘mƒŠ’, as an adverbial particle of cause or reason, occurs in poems No. 4, 20, 22, 92, 93, 271 and 380 of PuŠƒnƒn‡Šu, a Tamil anthology of non-erotic poems, collected in the 2nd century A.D. The same word in the latter form i.e., ‘mar„’, is used in Hindi in the same sense, the only differences being the prefixing of the post-position ‘k„’ and its use after only nouns and not preterite finite verbs as in Tamil.

     Employment of a particular form of verbal noun as imperative verb also, is common to both Tamil and Hindi.

     The order of words in a Hindi sentence is the same as in Tamil.

     There are also some proverbs in Tamil and Hindi, which are identical in meaning.