The　need　of　non-toxic　synthesis　protocols　for　nanoparticles　arises　developing　interest　in　biogenic　approaches.　The　present　project　was　focused　on　cost　effective,　environment　congenial　synthesis　of　Ag　nanoparticles　and　their　biological　applications.　Leaf　and　root　extracts　of　Ricinus　communis　were　used　as　a　reducing　and　stabilizing　agent　in　synthesis　process.　A　Proposed　mechanism　in　published　literature　suggested　that　Indole-3-acetic　acid,　l-valine,　triethyl　citrate,　and　quercetin-3-0-p-d-glucopyranoside　phytoconstituents　of　Ricinus　communis　act　as　reducing　and　capping　agents.　The　synthesized　Ag　NPs　were　characterized　with　a　help　X-ray　diffractometer,　Transmission　electron　microscopy,　UV-Vis　spectrophotometry　and　Fourier　Transform　Infrared　Spectroscopy　(FTIR).　The　XRD　results　inveterate　the　synthesis　of　pure　nano　size　crystalline　silver　particles.　The　FTIR　data　revealed　the　possible　functional　groups　of　biomolecules　involved　in　bio　reduction　and　capping　for　efficient　stabilization　of　silver　nanoparticles.　TEM　analysis　confirmed　the　almost　spherical　morphology　of　synthesized　particles　with　mean　size　29　and　38　nm　for　R-Ag-NPs　(root)　and　L-Ag-NPs　(leaf),　respectively.　The　stability　of　synthesized　nanoparticles　was　examined　against　heat　and　pH.　It　was　observed　that　synthesized　nanoparticles　were　stable　up　to　100　°C　temperature　and　also　showed　stability　in　neutral,　basic　and　slightly　acidic　medium　(pH　05-06)　for　several　months　while　below　pH　5　were　unstable.　The　synthesized　silver　nanoparticles　had　promising　inhibition　efficiency　in　multiple　applications,　including　as　bactericidal/fungicidal　agents　and　Urease/Xanthine　oxidase　enzymes　inhibitors.　The　cytotoxicity　of　synthesized　nanoparticles　shows　that　the　concentration　under　20　μg/mL　were　biologically　compatible.