If it is a word it should be easy to speak, spell and remember. The best trademarks are invented words or coined words or unique geometrical designs. Please avoid selection of a geographical name, common personal name or surname. No one can have monopoly right on it. Avoid adopting laudatory word or words that describe the quality of goods (such as best, perfect, super etc.) It is advisable to conduct a market survey to ascertain if same/similar mark is used in market.