My South Indian Dravidian language Malayalam, is around 50% Sanskrit words.
Technically any Sanskrit word is also a Malayalam word.
Examples of Sanskrit words we would use daily in conversation with a fluent Malayalam speaker include:
Pusthakam (Sanskrit: Pustakam) - Book
Bhāryā - Wife
Swapnam (Sanskrit: Swapnam) - Dream
Agni (Sanskrit: Agni) - Fire
Varṇam - Color
Samayam (Sanskrit: Samayam) - Time
Vidhyālaya (Sanskrit: Vidyālaya) - School
And of course many personal names ( including mine, my wife's and my children's ) are in Sanskrit.
We have a word for this phenomenon : "Manipravalam is a medieval South Indian literary style and hybrid language that blended Sanskrit with local Dravidian vernaculars—primarily Malayalam and Tamil. Translating to "ruby and coral," it symbolized the seamless, decorative intertwining of the local tongue's grammar with the eloquent vocabulary of Sanskrit"
There are thousands of other Sanskrit words in daily use in Malayalam.
"bodham, santoṣam, saṅkaṭam, sneham, iṣṭam, premam, deṣyam, (Skt : dveṣyam) kopam, viṣamam, saṁśayam, bhayam, buddhi, dhairyam, ālocana, cinta, vicāram, vedana, daya(vu), dākṣiṇyam, abhimānam, mānam, sukham, tṛpti, manass, antass, śānti, samādhānam, svairam, sahatāpam, paribhavam, parāti (a Malayalam word made using Sanskrit; parātī, act of rejection) duḥkham, ātmā(vu), āgraham, virodham, prayāsam, kaṣṭam, manaḥprayāsam, manassamādhānam, manośūnyam (this is a common phrase in some dialects and completely absent in others, it refers to the act of not having mental happiness in anything) dhārṣṭyam (I am surprised how mallus still use such tough words) puccham, (means “tail”/”inferior” literally, used in the sense of contempt) ahaṅkāram, bhāvam, svabhāvam, guṇam, āśvāsam, āśaṅka, (colloquial in some dialects) ākulam, (colloquial in some other dialects) ākrāntam, ārtti, krūram, vīryam, ākāṃkṣa, vātsalyam, vāśi, tātparyam, svapnam, saṅkalpam "
"vṛtti, sampatt-, sāmpattikam (this is a Malayalam word made using Sanskrit vṛddhi rule, the Sanskrit word should have been sāmpadikam) svatt-, prakṛti, praśnam, upayogam, svantam, svātantryam, sādhanam, sammānam, sammatam, saṅgītam, pratīkṣa, pradhānam, ādyam, avasānam, divasam, rātri, sambhavam, samayam, kālam, vidham, vidhi, śīlam, rīti, svasthata, asvasthata, sūryan, candran, bhūmi, guḷika (meaning “round”, same root as gola) sūkṣ-ikkuka, rakṣa, surakṣa, upadeśam, lābham, prayojanam, āvaśyam, atyāvaśyam, adhikam, sāram, nissāram, tatkālam, prasiddham,upakāram, anugraham, varam, dānam, śāpam, śalyam, aṅgīkāram, anveṣaṇam, ākrama-, akramam, parākramam, yuddham, tarkam, sallāpam, niścayam, jīvitam, mārgam, uccam, śabdam, āghoṣam, sādhu, puṇyam, pāpam, svargam, narakam, pātāḷam, prakāśam (more colloquial words are veṭṭam, veḷiccam, all are equally frequent according to dialects) viśvāsam, kāryam, śuddham, vaśam, sāmarthyam, sādhakam, dikk, diśa, vākk, svaram, ābharaṇam, viparītam, nāśam, vārtta (for “news” : made using vṛddhi from Sanskrit varta- “present affair”, compare with NIA bāt) sāmyam, trāss (from Skt tulās) saṃsāram, vartamānam, anusaraṇa, anuvādam, anāvaśyam, alpam, svalpam, abhiprāyam, dhārālam (an old Sanskrit dialectal word used today only in Malayalam, the opposite of viralam) and hundreds more. (even out of the world Sanskrit-Malayalam combination words like vṛtti-kEṭu, buddhi-muṭṭu, piṭi-vāśi)"