Iron-deficiency anemia can cause fatigue (tiredness), shortness of breath, chest pain, and other symptoms. Severe iron-deficiency anemia can lead to heart problems, infections, problems with growth and development in children, and other complications.
Semantics is the study of meaning. It is a wide subject within the general study of language. An understanding of semantics is essential to the study of language acquisition (how language users acquire a sense of meaning, as speakers and writers, listeners and readers) and of language change (how meanings alter over time).
Semantics (from Ancient Greek: ÏÎ·Î¼Î±Î½ÏÎ¹ÎºÏÏ sÄmantikos, significant) is primarily the linguistic, and also philosophical, study of meaningâin language, programming languages, formal logics, and semiotics. It focuses on the relationship between signifiersâlike words, phrases, signs, and symbolsâand what they stand for, their denotation.