This dissertation investigates the semantics and pragmatics of two types of free choice items (FCIs) in Korean which employ a wh-indeterminate (i.e., wh-morphology. e.g., "nwukwu" "who/someone") and a non-deictic-indefinite (e.g., "amwu") respectively in combination with a suffixal particle--"na." Both wh-indeterminate-based FCI (wh-(N)-"na") and non-deictic-indefinite-based FCIs ("amwu"-(N)-"na") show that their quantificational force is not fixed but variable (i.e., quantificational variability). Therefore, these FCIs need to be defined in terms of a property other than their quantificational force. The previous universal and existential FCI analyses literature provided one way of defining FCIs in Korean, but they leave three fundamental problems unanswered (Choi 2007, Kim and Kaufmann 2006). First, both the alleged universal FCIs and the alleged existential FCIs in Korean show the quantificational variability which varies between universal and existential and even plural reading. This presents a problem that neither universal nor existential quantificational force can properly define and distinguish the two types of FCIs in Korean. Second, the previous universal and existential FCI analyses fail to capture that, unlike FCI "amwu"-(N)-"na," FCI wh-(N)-"na" strongly implies the existence of an individual for a given eventuality or property (i.e., the expectation of existence (Giannakidou and Cheng 2006)). Third, the existential FCI analyses for FCI "amwu"-(N)-"na" had not adequately explained the depreciative meaning which is negative and is closely related with unqualified or inappropriate individuals. To solve these problems, I propose a definite and indefinite FCI analysis for wh-(N)-"na" and "amwu"-(N)-"na" respectively (i.e., wh-indeterminate-based versus non-deictic-indefinite-based FCIs) adopting the framework of Giannakidou and Cheng (2006). Then, I solve the three problems as follows. First, the proposed definite and indefinite FCI analysis can distinguish the two types of FCIs in terms of their (in)definiteness, but not in terms of their quantificational force. Second, the proposed analysis nicely captures the expectation of existence as the semantic definiteness required in definite FCI in Korean. Third, I explain the depreciative (i.e., negative) meaning in indefinite FCI "amwu"-(N)-"na" by adopting the expressive meaning analysis of Potts (2007). The contribution of this study is proposing a novel analysis for FCIs in Korean (i.e., the definite and indefinite FCI analysis) and capturing not only semantic and syntactic (in)definiteness but also negative depreciative meaning in some class of indefinite FCIs. Furthermore, this study establishes an important connection between wh-indeterminate-based FCIs (wh-(N)-"na") with definiteness on the one hand, and between non-deictic-indefinite-based FCIs ("amwu"-(N)-na) with indefinitenss on the other hand. These connections enable us to fully capture (in)definiteness in FCIs in Korean. Finally, this study shows that the non-deictic-indefinite-based FCIs (i.e., "amwu"-(N)-"na") are related with the depreciative meaning which is negative adopting Potts' (2007) analysis. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]